Acne scarring: A review of available therapeutic lasers

Efficacy and safety of non-ablative vs. ablative lasers for acne scarring: A meta-analysis

Acne scarring significantly affects physical appearance and psychological well-being, prompting the exploration of various treatment options, including ablative and non-ablative laser therapies. The debate around their efficacy and safety persists, underscoring the need for a comprehensive analysis. This meta-analysis compares the therapeutic outcomes and safety profiles of ablative and non-ablative laser treatments for acne scars, based on a comprehensive review of clinical trials conducted up to March 2023. The evaluation focused on clinical improvement, patient satisfaction, and the incidence of treatment-related complications. Analysis of seven studies encompassing 186 cases revealed that non-ablative lasers are more effective for atrophic acne scars, offering a better safety profile with fewer adverse effects, such as reduced pain and shorter erythema durations. Conversely, ablative laser therapy demonstrated superior results in both observer-based and patient-driven evaluations. The findings suggest that while both laser types are effective in mitigating acne scarring, the choice between ablative and non-ablative lasers should consider the balance between efficacy and safety. The study highlights the necessity for more standardized research to refine laser treatment protocols for acne scars, aiming to optimize outcomes and minimize risks.

Microneedling Radiofrequency for Acne Vulgaris in Adolescents as a Promising Device-Based Treatment: A Clinical Case Series

Background: Acne vulgaris is a persistent inflammatory condition affecting the sebaceous unit, in whose pathophysiology the Propionibacterium acnes (P. acnes) play an important role, and that can have major psychological effects. Objective: The current study aims to investigate the safety and efficacy of an innovative fractional microneedle radiofrequency (RFMN) device for acne management in adolescents. Materials and Methods: A total of 21 Caucasian young patients with facial acne of all grades of severity underwent three treatment sessions spaced 15/30 days apart with an RFMN device. The Acne Radar Questionnaire was administered to all patients. The data were represented using Radar graph, and the sample population was distributed in quartiles. The first quartile, the second quartile, and the third quartile were calculated for all patient populations before and at 6 months follow-up (6 MFU). The evaluation of the severity of acne lesions was assessed by using the Global Acne Severity scale. Photographs of patients with acne were acquired with a digital camera before and at 6 MFU after the last treatment session. Results: The mean values of each item of the Acne Radar Questionnaire significantly (p < 0.001) improved for all patients treated. The analyses obtained by the quartiles showed that all variables improved after the treatment with the study device. The photographic images confirm the positive results and the improvement of acne lesions. No major side effects were observed. Conclusions: The study system appears to be an effective and safe treatment choice for patients with inflammatory active acne and acne scarring.

The 2910-nm Fiber Laser Is Safe and Effective for Improving Acne Scarring

BACKGROUND

Acne scarring results from the inflammation associated with acne papules, which alters dermal collagen, typically producing depressed scars. Lasers have been used to remodel skin improving the texture and appearance of acne scars. Herein, we investigate a new 2910 nm, erbium-doped, fluoride glass, fiber laser for improving acne scars. This novel laser delivers up to 5000 Hz low-energy pulses, providing a unique treatment modality.

METHODS

Fourteen subjects with rolling and/or boxcar acne scars were enrolled in this study. Thirteen subjects completed the final visit and received three treatments with the 2910 nm fiber laser at 6-8-week intervals. Eight subjects were Fitzpatrick type II and five were Fitzpatrick type III. Digital images were taken pre- and 1- and 3-months posttreatment and evaluated by two blinded reviewers in a randomized fashion for improvement. Subjects and the treating physician completed a Global Aesthetic Improvement Scale (GAIS) before treatment and at each visit to subjectively evaluate treatment effect. Histological analysis was performed on ex vivo lower eyelid skin samples. Side effects were evaluated by the treating physician and included erythema, edema, and pinpoint bleeding.

RESULTS

Evaluation of blinded digital images revealed a mean improvement of 47.3% ± 14.2% (mean ± SEM) 3 months following the final treatment. GAIS scores demonstrated improvement as evaluated by both the subjects and the treating physician. Side effects averaged trace-to-mild erythema, edema, and pinpoint bleeding.

CONCLUSION

This study shows that the 2910 nm, erbium-doped, fluoride glass, fiber laser is safe and effective for improving the appearance of acne scars.

Evaluation and comparison of the efficacy and safety of the combination of topical phenytoin and microneedling with microneedling alone in the treatment of atrophic acne scars: A controlled blinded randomized clinical trial

INTRODUCTION

Severe acne breakouts often lead to atrophic acne scars, which affect millions of people worldwide and can significantly affect a person's self-confidence and self-image. Given the difficulty in treating atrophic acne scars, this study aims to investigate the efficacy of topical phenytoin in the treatment of atrophic acne scars.

METHOD

This split face clinical trial on 25 patients between the ages of 18 and 40 involved the application of microneedling on one side of the face, with three sessions taking place over the course of a month. On the other side, a 1% phenytoin cream was administered three times daily for 1 week following the microneedling procedure. Baseline information was collected for all patients, and follow-up assessments were conducted during the treatment sessions and 2 months after the last session. The assessments included evaluating the number and area of pores and spots, determining scar severity, assessing patient satisfaction, and recording any potential complications.

RESULTS

Among patients, 20 individuals (80%) were females, and the average age of the participants was 35.96 ± 9.23. In terms of the fine pore area, despite the fine pore count, both groups showed improvement over time (p: 0.03 vs. 0.06). Also, regarding large pore count and area, and the count and area of spots, both groups showed improvement over time (p: 0.001). However, there were no significant differences between the two groups (p > 0.05). On the other hand, when it comes to acne scar grade and patients' satisfaction, the phenytoin group outperformed the control group in all follow-up sessions and this difference was found to be significant (p: 0.001). It is worth noting that no complications were observed among any of the patients.

CONCLUSION

It appears that combining phenytoin cream with microneedling has a more effective therapeutic outcome in enhancing atrophic acne scars, when compared to microneedling alone, and this method can be regarded as a viable alternative in treating these types of scars.

Wound healing, scarring and management

Understanding wound healing is imperative for the dermatological physician to optimize surgical outcomes. Poor healing may result in negative functional, cosmetic and psychological sequelae. This review briefly outlines the physiology of wound healing, with a view to improving the management of wounds and scars, and minimizing the long-term scarring complications.

Atrophic Postacne Scar Treatment: Narrative Review

Acne scarring is a frequent complication of acne. Scars negatively impact psychosocial and physical well-being. Optimal treatments significantly improve the appearance, quality of life, and self-esteem of people with scarring. A wide range of interventions have been proposed for acne scars. This narrative review aimed to focus on facial atrophic scarring interventions. The management of acne scarring includes various types of resurfacing (chemical peels, lasers, and dermabrasion); the use of injectable fillers; and surgical methods, such as needling, punch excision, punch elevation, or subcision. Since the scarred tissue has impaired regeneration abilities, the future implementation of stem or progenitor regenerative medical techniques is likely to add considerable value. There are limited randomized controlled trials that aimed to determine which treatment options should be considered the gold standard. Combining interventions would likely produce more benefit compared to the implementation of a single method.

Evidence-based management of cutaneous scarring in dermatology part 2: atrophic acne scarring

Atrophic acne scars are the most common type of acne scars and are classified into three main types: icepick, boxcar, and rolling scars. Various procedures and techniques for atrophic acne scarring are discussed in detail, with stronger evidence-based support for lasers (non-fractional, fractional, ablative, and non-ablative), platelet-rich plasma as adjunctive treatment, chemical peels (glycolic acid, trichloroacetic acid, and Jessner's solution), dermal fillers such as hyaluronic acid, and microneedling, and lesser quality evidence for microdermabrasion, subcision, and lipoaspirate grafting. Further research is needed to optimize treatment protocols, assess the efficacy of monotherapies, and establish standardized guidelines for clinicians. This paper will provide a comprehensive review of the evidence-based management of atrophic acne scars, including currently commonly utilized therapies as well as more innovative treatment options.

Fractional CO2 laser versus 1064-nm long-pulsed Nd:YAG laser for inflammatory acne vulgaris treatment: a randomized clinical trial

Acne vulgaris is challenging to treat for several individuals. Laser therapy may be a desirable alternative to traditional therapies with limited success. This study aimed to assess efficacy of fractional CO2 laser versus Nd:YAG laser for acne vulgaris therapy. Thirty cases with acne vulgaris underwent both fractional CO2 laser and Nd: YAG laser treatments in a randomized split face design at a 14-day interval for four sessions. The clinical efficacy was evaluated by counting acne lesions and utilizing the Global Acne Severity Scale (GEA Scale). GEAs decreased significantly after both fractional CO2 and Nd:YAG modalities after treatment and at a 3-month follow-up; fractional CO2 demonstrated significant more decrease in GEAs with (P = 0.006, 0.00 (respectively. Moreover, fractional CO2 showed a significantly higher satisfaction level (P = 0.004) and a better clinical improvement percentage regarding inflammatory and noninflammatory acne lesions (P = 0.007 and 0.000, respectively) after 3 months of follow-up. Apart from transient erythema, there were insignificant adverse effects concerning both treated sides. Fractional CO2 and Nd:YAG lasers are efficient physical modalities of acne treatment. However, fractional CO2 laser was more effective and more satisfying to the patients.

Evaluation of 30% supramolecular salicylic acid followed by 1565-nm non-ablative fractional laser on facial acne and subsequent enlarged pores

The treatment of acne vulgaris and enlarged pore remains challenging. The 30% supramolecular salicylic acid (SSA) is a newly developed form of SA which affects pathogenic factors of acne. Non-ablative fractional laser (NAFL) promotes remodeling and decreases sebum excretion with minimal side effect. The current study was aimed to evaluate the sequential modality with 30% SSA followed by 1565-nm NAFL on facial acne and subsequent enlarged pores. A 20-week-duration prospective study was performed. Consecutive 4 sessions of 30% SSA treatment were conducted, at 2-week intervals. Two weeks after the last session of 30% SSA, 3 sessions of 1565-nm NAFL treatment were applied, at 4-week intervals. The noninvasive devices measured scores of red areas and pores, cuticle moisture, and sebum secretion. The main subjective evaluation was global acne grading system (GAGS). The side effects were recorded. Compared to baseline, the scores of red areas and pores, sebum secretion, and GAGS significantly decreased after series sessions of 30% SSA treatments (P < 0.05). The sequential application of 1565-nm NAFL maintained the good results (P < 0.05, comparing to baseline) and even further decreased the sebum secretion (P < 0.05, comparing to SSA). The cuticle moisture remained unchanged during whole period, and side effects including tingling sensation, pain, erythema, and edema were quickly reversible and acceptable. The significant improvements of acne and pores were produced by 30% SSA, and 1565-nm NAFL inhibited the sebum secretion and maintained the efficacies of 30% SSA. The sequential modality of 30% SSA followed by 1565-nm NAFL was an alternative choice for acne vulgaris companied with enlarged pores.

Truncal Acne and Scarring: A Comprehensive Review of Current Medical and Cosmetic Approaches to Treatment and Patient Management

Acne vulgaris is one of the most common skin disorders worldwide. It typically affects skin areas with a high density of sebaceous glands such as the face, upper arms, chest, and/or back. Historically, the majority of research efforts have focused on facial acne vulgaris, even though approximately half of patients with facial lesions demonstrate truncal involvement. Truncal acne vulgaris is challenging to treat and poses a significant psychosocial burden on patients. Despite these characteristics, studies specifically examining truncal acne vulgaris are limited, with treatment guidelines largely derived from facial protocols. Therefore, truncal acne remains an understudied clinical problem. Here, we provide a clinically focused review on the epidemiology, evaluation, and available treatment options for truncal acne vulgaris. In doing so, we highlight knowledge gaps with the goal of spurring further investigation into the management of truncal acne vulgaris.

Efficiency and safety of microneedling fractional radiofrequency in the treatment of Chinese atrophic acne scars: A retrospective study of 3 consecutive treatments with 1-month intervals

BACKGROUND

Atrophic acne scars (AAS) impact the aesthetic appearance, inducing social and psychological problems. Effective and safe therapy for AAS is urgently needed now. Microneedling fractional radiofrequency (MFRF) has emerged as a minimal invasive alteration for treating AAS lately, while the existing data on Chinese population was few.

AIMS

We aimed to explore the effectivity and safety of MFRF in Chinese patients with facial AAS and analyze the response of different subtypes to MFRF treatment.

METHODS

We conducted a retrospective analysis using data from medical records and clinical photographs of 40 Chinese patients with AAS with Fitzpatrick skin type III-IV, all of them had received 3 MFRF treatments with 1-month intervals and were followed up 3 months after the last treatment. The clinical severity was assessed through échelle d'évaluation clinique des cicatrices d'acné (ECCA) score at each visit. Clinical photographs were taken by VISIA. Patients were asked to evaluate their satisfaction of the treatment using a 5-point Likert scale at the last visit.

RESULTS

ECCA score decreased more than a half at the last visit based on the baseline. Among the three types of AAS, the M-shaped scars respond most quickly to MFRF and the U-shaped scars improved the most after 3 months follow-up. A significant improvement was seen in clinical appearance, parallel to the change of ECCA, indicating the remarkable improvement of AAS after the MFRF treatment. Concomitant active acne was controlled along with the improvement of AAS. Statistics from VISIA showed excellent improvement in pores and texture as well. Side effects including pain and erythema were transient and mild. The number of MFRF treatment sessions was positively associated with the degree of improvement. Of the total 39 patients who had given a score of satisfaction, more than 89% (35 patients) were very satisfied or satisfied with the outcome.

CONCLUSIONS

To sum up, our study reveals that MFRF provides high efficiency in treating Chinese AAS patients with high satisfaction and low risk of adverse effects. M-shaped scars are the most sensitive type to the treatment, but the U-shaped scars improve most at the last visit. The simultaneous minimization of pores and improvement of skin texture imply the increased collagen stimulated by MFRF. Regular MFRF should be considered a good choice in treating AAS.

Early acne scar intervention with 1064 nm picosecond laser in patients receiving oral isotretinoin: a randomized split-face controlled pilot study

Early acne scar intervention is important. Oral isotretinoin is widely used in patients with moderate to severe acne. Picosecond laser has shown a promising effect on scar clearance. However, there is a lack of reports on the efficacy and safety of early acne scar management by using 1064-nm picosecond laser in patients receiving low-dose oral isotretinoin. Twenty-four patients with atrophic acne scars of Fitzpatrick skin type III to V were enrolled. All patients were receiving low-dose oral isotretinoin (0.12-0.22 mg/kg/day) during the treatment. The face of the participants was randomly assigned to receive 2 sessions of fractional picosecond 1064 nm Nd: YAG laser (FxPico) treatment and 2 follow-ups, with an interval of 1 month (month 0-3). Clinical efficacy and safety were assessed by photographs, ECCA grading scale, the number of scar lesions melanin and erythema indexes (MI and EI), TEWL, DLQI, and patient satisfaction and the adverse events were recorded on every visit. FxPico significantly decreased the ECCA score and showed higher improvement in the ECCA score. FxPico treated side achieved a significant reduction in all acne scar types, while only boxcar scars and rolling scars showed higher improvement. TEWL but not MI or EI were significantly improved. DLQI and patient satisfaction were higher with the FxPico-treated side than control side. No adverse effects were observed and all the side effects observed were temporary and tolerable. Early intervention by FxPico on patients receiving low-dose oral isotretinoin is a safe and effective modality to improve atrophic acne scars.

Meta-analysis of fractional radiofrequency treatment for acne and/or acne scars

BACKGROUND

Fractional radiofrequency (FRF) is increasingly used for acne scars. The common coexistence of acne scars and active acne is a challenge in the timely management of acne scarring.

AIMS

We conducted a systematic review and meta-analysis to compare the efficacy and safety of FRF treatment with the lasers for acne and/or acne scars.

METHODS

A systematic search was performed on PubMed, Embase, Ovid, Cochrane Library, and Web of Science. Compared with the lasers, a meta-analysis was conducted to assess the clinical improvement and adverse events after FRF treatment.

RESULTS

Eight randomized controlled trials were included. FRF group was more effective than the laser group in patient-evaluated acne improvement (RR = 1.35, 95% CI: 1.01 ∼ 1.80). Regardless of observer assessment or patient evaluation, the FRF group was as effective as the laser group in treating atrophic acne scars (RR = 0.92, 95% CI: 0.78 ∼ 1.08; RR =1.15, 95% CI: 0.99 ∼ 1.34). Although there was no difference in pain level and crusting time between the two groups (SMD =0.20, 95% CI: -0.72 ∼ 1.12; SMD = -0.93, 95% CI: -2.38 ∼ 0.52), PIH incidence of FRF was significantly lower than that of the laser group (RR = 0.12, 95% CI: 0.04 ∼ 0.35). The duration of erythema after FRF treatment was also obviously shorter than that after the laser treatment (SMD = -0.78, 95% CI: -1.37 ∼ -0.18). Subgroup analysis showed that at least a 12-week follow-up was required to observe the full effects of FRF.

CONCLUSIONS

FRF could be a better choice for atrophic acne scar patients with active acne. FRF is superior in treating atrophic acne scar patients prone to pigmentation.

Efficacy of Microneedling With 35% Glycolic Acid Peels Versus Microneedling With 15% Trichloroacetic Acid Peels in Treatment of Atrophic Acne Scars: A Randomized Controlled Trial

BACKGROUND

Combination of microneedling and chemical peeling is a simple cost-effective treatment for acne scars.

OBJECTIVE

To compare efficacy and safety of combining microneedling with 35% glycolic acid (GA) peel versus microneedling with 15% trichloroacetic acid (TCA) peel in facial atrophic acne scars.

METHODS

Forty acne scars patients were randomly divided into 2 groups of 20 each. Patients underwent microneedling followed by 35% GA peeling in Group 1 and 15% TCA peeling in Group 2 at 2 weekly intervals. Improvement was graded by Goodman and Baron's qualitative and quantitative global acne scar grading systems, physician's global assessment, and visual analogue scale (VAS). Skin texture was graded by VAS.

RESULTS

On comparing qualitative and quantitative acne scar grading within groups, there was significant difference from the baseline. When the two groups were compared for quantitative and qualitative acne scar grading, the difference was statistically not significant at the end of therapy. In VAS, greater number of patients assessed response as excellent and good in Group 1 than in Group 2 indicating better skin texture improvement in Group 1.

CONCLUSION

Both combinations were equally efficacious in treating acne scars. Glycolic acid peel delivered additional advantage of improvement in skin texture.

Microneedle fractional radiofrequency for atrophic acne scars: in vivo evaluation of results by 3D analysis and reflectance confocal microscopy

BACKGROUND

The efficacy of microneedle fractional radiofrequency (MFR) for the treatment of atrophic acne scars has been recently described, but accurate in vivo microscopic documentation of the processes occurring has never been reported.

AIMS

The aim of this study is to describe in vivo morphological atrophic acne scars' variations after treatment with MFR by means reflectance confocal microscopy (RCM) and three-dimensional (3D) imaging.

PATIENTS/METHODS

A total of 11 patients requiring treatment for atrophic facial acne scars were treated with four monthly sessions of MFR. 3D imaging and RCM were assessed at baseline and 1 months after last session. Clinical improvement, according to Global Assessment Improvement Scale (GAIS), and patients' satisfaction were evaluated.

RESULTS

Clinical improvement was observed in all the treated patients, although better results were obtained for boxcar scars (p= 0.043). 3D imaging revealed a significant improvement in terms of mean scars' depth (p<0.001). Otherwise, RCM highlighted collagen remodeling with restoration of a reticular structure.

CONCLUSIONS

Our study confirms the efficacy and safety of MFR in acne scars' treatment and provides the microscopic description of the results using RCM. This article is protected by copyright. All rights reserved.

The Use of Lasers and Light Devices in Acne Management: An Update

Acne vulgaris is a disease of the pilosebaceous unit and the most common inflammatory dermatosis worldwide. It is also associated with significant economic burden. Limitations of conventional topical and systemic treatments include long treatment course, intolerable adverse effects, antibiotic resistance, and patient compliance. Therefore, laser and light-based interventions present as alternative options over the past decade and have been used in combination with conventional pharmacological therapies and other physical modalities. An updated overview on the use of lasers and light-based devices in acne management is presented to help clinicians understand the safety and efficacy of these treatment options. The effectiveness of neodymium:yttrium aluminum garnet (Nd:YAG) for treating acne is supported by more high-level studies compared with other laser devices. There is limited evidence to support the use of CO₂ lasers, potassium titanyl phosphate lasers, and 1565-nm non-ablative fractional lasers for treating acne. Among light devices, photodynamic therapy is the most studied, showing higher efficacies than some of the conventional topical and oral acne therapies. Intense-pulsed light and blue light therapies also show favorable outcomes. A limitation is that most studies are non-randomized and lack a control group, and report on a variety of device settings, treatment regimens, and outcome measures, making it challenging to summarize and generalize findings. Although the use of laser and light devices to treat acne is promising, further work with randomized controlled study designs and larger sample sizes will provide improved guidance on the application of these modalities.

Energy-based devices for the treatment of acne scars: 2021 international consensus recommendations

BACKGROUND AND OBJECTIVES

Acne scars are one of the most distressing and long-term consequences of acne vulgaris, with damaging effect on a person's physical, mental, and social well-being. Numerous treatment options are available including surgical and nonsurgical techniques, depending on the clinical presentation. Although considerable advances in the development of new treatment technologies and applications have been made in the last decade, international treatment guidelines and reimbursement schemes have not yet caught up with current knowledge and practice in many centers. The authors intend to highlight the potential utility of energy-based devices (EBDs) for acne scarring, offer recommendations for safe and efficacious treatment, and provide consensus-based EBD treatment options based on varying presentations demonstrated in a series of real-life clinical photographs.

STUDY DESIGN/MATERIALS AND METHODS

An international panel of 24 dermatologists and plastic surgeons from 12 different countries and a variety of practice backgrounds was self-assembled to develop updated consensus recommendations for the treatment of acne scars. A two-step modified Delphi method took place between March 2020 and February 2021 consisting of two rounds of emailed questionnaires. The panel members approved the final manuscript via email correspondence.

RESULTS

The manuscript includes a comprehensive discussion and panel recommendations regarding the following topics: 1. the role of EBD in mitigating and treating acne scars in a patient with active acne, 2. the use of various EBDs for the treatment of different acne scar types with special focus on commonly used laser platform such as vascular lasers, ablative fractional lasers (AFLs) and non-AFLs (NAFLs), 3. treatment combinations, and 4. acne scar treatments in skin of color. The last part comprised of 10 photos of real-life clinical cases with the panel recommendation treatment plan to achieve best aesthetic outcome.

CONCLUSION

Panel members were unanimous in their view that EBDs have a role in the management of acne scars, with AFLs, NAFLs, vascular lasers, and RF devices preferentially selected by most of the panel experts. EBDs are considered a first-line treatment for a variety of acne scar types and patients without access to these treatments may not be receiving the best available care for optimal cosmetic results. Future high-quality research and updated international treatment guidelines and reimbursement schemes should reflect this status.

Dermatology: how to manage acne vulgaris

Background

Acne vulgaris is the most common skin disease that can lead to disfigurement and psychological distress. This article aims to provide a narrative updated review on the management of acne vulgaris.

Methods

A PubMed search was performed with Clinical Queries using the key term “acne”. The search strategy included clinical trials, meta-analyses, randomized controlled trials, observational studies and reviews. The search was restricted to articles published in English.

Results

Treatments of acne include proper skin care, topical medications, oral medications and procedural therapies. Topical agents are the first-line treatment for mild-to-moderate acne and can be used as combination therapy for more severe acne. Systemic therapies are usually prescribed for the initial treatment of moderate-to-severe acne as well as for acne that is refractory to topical therapies.

Conclusion

Topical retinoids are the drugs of choice for the treatment and maintenance therapy of patients with mild-to-moderate acne vulgaris. Depending on the severity of the acne, topical retinoids may be used alone or in combination with benzoyl peroxide and topical or oral antibiotics. Oral antibiotics are an important therapy for inflammatory acne unresponsive to topical therapy. Neither topical nor oral antibiotics should be used as monotherapy. Oral contraceptives and/or spironolactone are useful for many women with acne. Oral isotretinoin is the drug of choice for severe, extensive, nodular acne vulgaris but is also often used in moderate cases where scarring is evident, acne-related psychosocial distress is significant or other treatment modalities have failed.

Split-face comparative study of fractional Er:YAG laser versus microneedling radiofrequency in treatment of atrophic acne scars, using optical coherence tomography for assessment

BACKGROUND

Efficacy and safety of ablative fractional laser used for treatment of acne scars have been described in several studies. Recently, microneedling radiofrequency treatment has been showing promising results with low risk of side effects and rapid healing time.

OBJECTIVE

To study efficacy and safety of ablative fractional Er:YAG laser 2940 nm and microneedling radiofrequency for facial atrophic acne scar.

METHODS

21 patients with atrophic postacne scars were randomized to MRF for one half of the face and laser for the other half. Four sessions were performed monthly. For evaluation, the validated scale "Quantitative Global Grading System for Postacne Scarring" and patient's satisfaction were used before and 3 months after treatment. Optical coherence tomography imaging of the skin was used as an objective tool for assessment.

RESULTS

Both sides showed significant improvement on clinical evaluation with no significant difference. Optical coherence tomography assessment showed significant increase of both epidermal and dermal thickness compared to baseline.

CONCLUSION

Both MRF and ablative fractional Er. YAG laser 2940 nm are effective in the treatment of post acne scars. Microneedling radiofrequency is better tolerated, with lower downtime and fewer side effects.

Comparison of Fractional Micro-Plasma Radiofrequency and Fractional Microneedle Radiofrequency for the Treatment of Atrophic Acne Scars: A Pilot Randomized Split-Face Clinical Study in China

BACKGROUND AND OBJECTIVE

Both fractional micro-plasma radiofrequency (RF) and fractional microneedle RF are novel devices that can be applied for the treatment of atrophic acne scars, and they have both been proved to be effective. To compare the clinical effectiveness and adverse reactions of fractional micro-plasma RF and fractional microneedle RF for the therapy of facial atrophic acne scars in a randomized split-face study.

STUDY DESIGN/MATERIALS AND METHODS

Sixty patients with facial atrophic acne scars received three applications at 2-month intervals in a randomized split-face study using fractional micro-plasma RF and fractional microneedle RF on different sides of the face. Three independent dermatologists evaluated the improvement in acne scars using the ECCA grading scale (Echelle d'Evaluation Clinique des Cicatrices d'Acné) by comparing the digital images and graded the improvement in the acne scars. Patients were asked to provide a self-evaluation of satisfaction for efficacy and safety. Adverse effects were also recorded after each treatment.

RESULTS

In total sixty patients completed the entire study. A significant improvement was observed in the appearance of acne scars, and the mean ECCA scores improved significantly after both modalities. The mean decrease in ECCA scores from the baseline was significantly more pronounced in fractional micro-plasma RF as compared with fractional microneedle RF (41.33 ± 20.19 vs 32.17 ± 17.35; P < 0.05). The degree of clinical improvement was also significantly better for fractional micro-plasma RF. Pain, erythema, and swelling were observed in all patients after both treatments. The pain was more intense during micro-plasma RF treatment (P = 0.000), and the duration of pain and erythema were longer than with fractional microneedle RF (P = 0.000). Postinflammatory hyperpigmentation (PIH) was observed in one patient on the fractional micro-plasma RF side while no PIH was observed on the fractional microneedle RF side. No infections or worsening of scarring was observed with either treatment. No subject was dissatisfied with the efficacy of either device. Rolling scars tended to respond better to fractional micro-plasma RF treatment compared with fractional microneedle RF (P = 0.000).

CONCLUSIONS

Both fractional micro-plasma RF and fractional microneedle RF are effective and safe methods for improving atrophic acne scars. Fractional micro-plasma RF is significantly more effective for atrophic acne scars, especially for rolling scars. However, fractional microneedle RF has fewer side effects plus shorter downtime, and patients are more comfortable after the treatment. Lasers Surg. Med. © 2020 Wiley Periodicals LLC.

The efficacy of fractional CO2 laser in acne scar treatment: A meta-analysis

Fractional CO₂ laser is a good option for treating acne scars. However, the clinical efficacy of this treatment modality requires further evidence. To perform a meta-analysis to assess clinical improvements in acne scars with fractional CO₂ laser and non-CO₂ laser therapies. Databases (PubMed, Embase, Cochrane Library) were searched using the search strategy to identify eligible studies. All statistical analyses were performed using the Review Manager 5.0, and a meta-analysis was conducted to assess the effects of fractional CO₂ laser used as a treatment for acne scars. Eight studies were included for further analysis. There was no significant difference between fractional CO₂ laser and non-CO₂ laser therapies in terms of clinical improvement, observer assessment (P = .19), patient assessment (P = .91), and incidence of post-inflammatory hyperpigmentation (P = .69). The subgroup analyses showed that the duration of follow-up had little effect on the evaluation of treatment effect. The efficacy of fractional CO₂ laser therapy in acne scars appeared to be equal to that of non-CO₂ laser therapies. More well designed randomized controlled trials and more credible and standard evaluation criteria are needed, and the efficiency of combination therapy requires further analysis.

Analysis of acne-related judicial precedents from 1997 to 2018 in South Korea

Medicolegal disputes are increasing in practical medicine. Medications or procedures related to acne could lead to medical malpractice. This study analyzed medical litigation associated with acne in South Korea. Acne-related judgments were searched using the Supreme Court of Korea's Written Judgment Management System based on the keyword "acne". Eleven cases were selected; eight cases were related to acne scar and three cases were related to acne. Treatment modalities such as peeling, laser treatment, photodynamic therapy and antibiotics resulted in lawsuits. Claimed sequelae of the treatments were hyperpigmentation, scar worsening, erythema, skin bumps and liver transplant. Eight cases were awarded to the plaintiff, and the others were dismissed. This study shows that various treatments for acne can cause medical disputes.

Treatment of acne scarring with a novel dual-wavelength laser

BACKGROUND

Facial acne scarring is a prevalent disease with both physical and psychosocial sequelae.

AIMS

This study aims to evaluate an innovative solid state dual wavelength 1,319 and 589 nm laser, which does not require consumable dye, for the treatment of acne scars.

PATIENTS/METHODS

A total of 12 patients (11 female, 1 man - Fitzpatrick skin phototypes II & III) with acne scar for more than one year, were treated with 1319 nm and subsequently by 589 nm, all having four-sessions, one every other week. A full face was covered in approximately 30 minutes. Acne scars were scored by one physician evaluator using the ECCA grading scale before, 2 weeks after each treatment and 1 month and 6 months after the 4th treatment. Safety was measured by recording subject discomfort scores and adverse effects.

RESULTS

12 subjects were enrolled into the study, 10 completed all 4 treatments and 2 were lost to follow up. Fluence used was 28 J/cm² ± 2.4 J/cm² at 1,319 nm and 16 ± 2.9 J/cm² at 589 nm. At baseline, mean ECCA score was 98 ± 23. This score was reduced to 88 ± 30 (p<0.02), after one session, to 68 ± 21 (p<0.01) after 2 sessions, to 58 ± 17 (p<0.01) after 3 sessions to reach 58 ± 15 (p<0.01) 1 month after the 4th and finally 66 ± 11 (p<0.01) at 6 month follow up. This observation corresponds respectively to 14%, 33%, 42%, 40% and 30% reduction of the ECCA score. Only one patient (ECCA score: 120) did not improve after 3 sessions. Slight to moderate erythema was sometimes observed without dryness or bruising. No or minimal burning or stinging was reported. No crust was observed.

CONCLUSION

Improvement in scarring was noted in almost all patients with minimal discomfort and minimal downtime. Combining both minimal side effects with effective acne scar reduction, this laser appears to be highly effective. Long-term evaluation remains necessary to confirm the efficacy of this new laser.

Use of combined fractional carbon dioxide laser and fractional microneedle radiofrequency for the treatment of acne scars: A retrospective analysis of 1-month treatment outcome on scar severity and patient satisfaction

BACKGROUND

Acne scars lead to social and psychological problems for patients, and they should be treated effectively. Ablative and nonablative lasers have been used for the treatment of acne scars in recent years.

AIMS

The aim of this study was to evaluate the effectivity of combined FCL and FmRF treatment for acne scars retrospectively.

METHODS

A total of 72 patients with acne scars who received FCL + FmRF treatment between 2014 and 2016 were included in this study. Photographs of patients before treatment and 1 month following the last treatment session were scored by two blinded researchers, according to the ECCA acne scar scoring method. Patients were contacted via telephone after 1 month following the last treatment and asked to evaluate their satisfaction with the treatment outcome using a 5-point Likert-type scale.

RESULTS

A significant decrease was noted in ECCA scores after the treatment along with temporary side effects. Change from pretreatment scores was significantly higher in patients very satisfied vs satisfied with treatment. The number of treatment sessions was positively correlated with treatment-related change in ECCA scores.

CONCLUSIONS

In conclusion, our findings revealed association of FCL + FmRF treatment with significantly improved ECCA scores, mild pain experience, and low rate of side effects in patients with acne scars, despite usage of high-energy FLC dose and five sessions of treatment on average. More remarkable improvement in ECCA scores during treatment seems to be associated with higher patient satisfaction and to be more likely in patients with darker skin types.

Emerging Therapies for Acne Vulgaris

As we gain a greater understanding of acne pathogenesis, both new agents as well as new uses for established drugs are being considered for the treatment of acne vulgaris. Multiple clinical trials assessing new formulations or combinations of established acne treatments have been conducted, and novel uses of antimicrobials such as modified diallyl disulfide oxide and nitric oxide are being assessed in clinical trials. There are also a multitude of new therapies currently being studied that target the inflammatory cascade of acne pathogenesis, including sebosuppressive and anti-inflammatory phytochemicals, and  small molecule inhibitors targeting sebaceous glands and enzymes, among others. Laser and light therapy is also being modified for the treatment of acne through combination methods with metal nanoshells and vacuum assistance. Probiotics have gained popularity in medicine as greater knowledge of the microbiome and its effects on multiple organ systems is being elucidated. Studies describing the positive effects of certain ammonia-oxidizing bacterial strains in the regulation of the skin's inflammatory response are ongoing. Therapies for acne are constantly evolving and current gold-standard acne therapy may be supplemented with novel treatment modalities in the near future.

Treatment of atrophic acne scarring with fractional micro-plasma radio-frequency in Chinese patients: A prospective study

BACKGROUND

Acne scarring is a common disfiguring sequela of acne vulgaris which can lead to serious psychosocial problems and have a negative effect on patients' quality of life. Although a variety of approaches can be used to treat atrophic acne scars, disadvantages such as long-healing time, dyspigmentation, infections, and prolonged erythema make these treatments unsatisfactory especially for Asians. Fractional micro-plasma radio-frequency is a novel technology that produces minor ablation to the epidermis to promote rapid re-epithelialization, while the radio-frequency evoked thermal effect can stimulate regeneration and remodeling of dermal fibroblasts.

OBJECTIVE

To evaluate the clinical effectiveness and safety of micro-plasma radio-frequency for the treatment of facial acne scars in Chinese patients.

MATERIALS AND METHODS

A total of 95 patients with facial atrophic acne scars were treated by micro-plasma radio-frequency using three sessions at 2-month intervals. Patients were seen 1 week after each treatment and 1, 3, 6 months after the final treatment. Improvement was assessed by three independent dermatologists who compared photographs taken before the first treatment and 6 months after the last treatment. Adverse effects were evaluated by a dermatologist who did not participated in the study. Patients also provided self-evaluation of satisfaction levels at the last follow-up visit.

RESULTS

A total of 86 patients with atrophic acne scars completed the entire study. There was a significant improvement in acne scars after three treatments. The mean score of ECCA grading scale (Echelle d'Evaluation Clinique des Cicatrices d'Acné) was reduced from 107.21 to 42.27 (P < 0.05). A total of 15 of 86 patients showed more than 75% improvement, 57 patients showed 50-75% improvement, and 14 patients showed 25-50%. After three treatments, all subjects showed improvements in spots, large pores, texture, UV damage, red areas, and porphyrin fluorescence. Pain, erythema, edema, effusion, and scab formation were observed in all patients. The average pain score on a visual analog scale was 6.14 ± 1.12 and all patients tolerated the treatments. The average duration of erythema was 6.26 ± 0.92 days. Hyperpigmentation, hypopigmentation, infections, and worsening of scarring were not seen. All patients were either "very satisfied" or "satisfied" with the treatment outcomes.

CONCLUSIONS

Fractional micro-plasma radio-frequency is an effective and safe treatment for acne scars, and might be a good choice for patients with darker skin. Lasers Surg. Med. 50:844-850, 2018. © 2018 Wiley Periodicals, Inc.

Combination of platelet rich plasma in fractional carbon dioxide laser treatment increased clinical efficacy of for acne scar by enhancement of collagen production and modulation of laser-induced inflammation

BACKGROUND

Platelet-rich plasma (PRP) which contains large amounts of growth factors has been tried to enhance therapeutic efficacy of laser treatment for acne scar with unknown underlying mechanism.

OBJECTIVES

The present study was conducted to investigate the molecular mechanism of increased clinical efficacy of PRP when combined with fractional laser treatment for treating acne scars.

METHODS

Subjects with mild to moderate acne scars were treated with two sessions of fractional CO₂ laser therapy given with and without co-administration of PRP. Skin biopsy specimens were obtained at baseline, 1, 3, 7, and 28 days for investigation of molecular profiles associated with skin changes produced by laser plus PRP treatment.

RESULTS

The PRP treatment increased clinical efficacy with decreased severity of adverse effects such as erythema, swelling and oozing. Productions of TGFβ1 and TGFβ3 proteins were more highly elevated on the PRP-treated side of the face compared to the control side at day 28. Furthermore, PRP-treated side showed significant increase of c-myc, TIMP, and HGF expression. Experimental fibroblast culture model was also used. PRP administration after laser irradiation increased expressions of p-Akt, TGFβ1, TGFβ3, β-catenin, collagen 1, and collagen 3 in both dose-dependent and time dependent manners in fibroblast. Moreover, we acquired clinical and histological data through randomized control clinical trial.

CONCLUSION

Taken together with human study results combined with the data from cell experiments we suggest that PRP treatment increased fibrogenetic molecules induced by fractional CO₂ laser, which have association with clinical effect. Lasers Surg. Med. 50:302-310, 2018. © 2017 Wiley Periodicals, Inc.

Treatment of acne scarring with a novel fractionated, dual-wavelength, picosecond-domain laser incorporating a novel holographic beam-splitter

Background and Objectives

Fractional treatment with a dual wavelength 1,064 and 532 nm picosecond‐domain laser, delivering a 10 × 10 array of highly focused beamlets via a holographic optic, was investigated for the treatment of acne scars.

Study

Twenty‐seven of 31 subjects completed the study, 19 were treated using 1,064 nm and 8 were treated at 532 nm, all having four‐monthly treatments. Blinded evaluation of digital images by three physician evaluators comparing pre‐ and 3‐month post‐treatment images measured efficacy using a 10‐point scale. Subject self‐assessment of treatment effects were also recorded. Safety was measured by recording subject discomfort scores and adverse effects.

Results

Blinded reviewers correctly identified the baseline image in 61 of the 81 image sets (75%), and baseline acne scar scores were 1.8 ± 0.7 and 1.8 ± 0.5 for the 1,064 and 532 nm cohorts, and decreased to 1.1 ± 0.5 (P < 0.001) and 1.1 ± 0.0 (P < 0.005), respectively. Post‐treatment erythema, mild edema, and petechiae were the only side effects noted.

Conclusion

The 1,064 and 532 nm picosecond‐domain laser incorporating a 10 × 10 holographic beam‐splitting handpiece was found to be safe and effective for the treatment of facial acne scars. The treatments were well tolerated and the subjects experienced little to no downtime. Lasers Surg. Med. 49:796–802, 2017. © 2017 The Authors. Lasers in Surgery and Medicine Published by Wiley Periodicals, Inc.

Safety of non-ablative fractional laser for acne scars within 1 month after treatment with oral isotretinoin: A randomized split-face controlled trial

BACKGROUND AND OBJECTIVE

Based on reports of poor wound healing and scarring, it is currently recommended that patients wait 6 months after completion of oral isotretinoin therapy before the safe initiation of laser treatment. Our aim was to evaluate the safety of non-ablative fractional laser (NAFL) treatment for acne scars within 1 month after isotretinoin therapy.

STUDY DESIGN/METHODS

This was a randomized split-face controlled trial involving 10 patients with acne scars who had completed isotretinoin treatment. All patients received three treatments each spaced 4 weeks apart with an erbium-doped 1550 nm NAFL on one side of the face within 1 month after isotretinoin therapy. The untreated side acted as a control. Wound healing and adverse effects as well as acne scar improvement were evaluated by two blinded dermatologists.

RESULTS

All patients demonstrated normal wound healing post NAFL treatments, and neither hypertrophic scars nor keloids were observed. Acne scar improvement was satisfactory.

CONCLUSION

NAFL treatment for acne scarring appears to be well tolerated within 1 month of completing isotretinoin treatment. Dermatologists should reevaluate the current recommendation to wait 6 months after isotretinoin treatment for acne scar revision with lasers. Other larger studies are necessary to further challenge this dogma. Lasers Surg. Med. 49:886-890, 2017. © 2017 Wiley Periodicals, Inc.

Unique Clinical Aspects of Nasal Scarring

Various methods are available for refining scars of the external nose and optimal scar revision frequently requires the utilization of multiple techniques. Differing anatomy of nasal subunits and their underlying structural framework limit surgical options in nasal scar revision compared with other areas of the face. An understanding of a variety of laser technologies and their specific applications can vastly aid in fine, controlled scar revision. Achieving optimal scar reduction regularly requires multiple stages of intervention, close follow-up, and repeat procedures.

Noninvasive Facial Rejuvenation. Part 3: Physician-Directed-Lasers, Chemical Peels, and Other Noninvasive Modalities

A proper knowledge of noninvasive facial rejuvenation is integral to the practice of a cosmetic surgeon. Noninvasive facial rejuvenation can be divided into patient- versus physician-directed modalities. Patient-directed facial rejuvenation combines the use of facial products such as sunscreen, moisturizers, retinoids, α-hydroxy acids, and various antioxidants to both maintain youthful skin and rejuvenate damaged skin. Physicians may recommend and often prescribe certain products, but patients are in control with this type of facial rejuvenation. On the other hand, physician-directed facial rejuvenation entails modalities that require direct physician involvement, such as neuromodulators, filler injections, laser resurfacing, microdermabrasion, and chemical peels. With the successful integration of each of these modalities, a complete facial regimen can be established and patient satisfaction can be maximized. This article is the last in a three-part series describing noninvasive facial rejuvenation. Here the authors review the mechanism, indications, and possible complications of lasers, chemical peels, and other commonly used noninvasive modalities.