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Najm AA, Salih SA, Fazry S, Law D. Moderated mediation role of ethnicity on natural skin care products purchasing intention model among multicultural consumers. PLoS One 2024; 19:e0300376. [PMID: 38512877 PMCID: PMC10956806 DOI: 10.1371/journal.pone.0300376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 02/24/2024] [Indexed: 03/23/2024] Open
Abstract
The trends for sustainable lifestyle and marketing motivated natural product consumption, such as natural skin care products (NSCPs). Different personal, environmental, and sociocultural factors influence purchase intention (PI) for NSCPs. However, there is a lack of evidence on the role of consumers' ethnicity in the PI model. The present study investigated the moderated mediation role of ethnicity in the relationship between related factors, including environmental concern, subjective norms, health factor, Halal certificate, packaging design, past experience factor, price factor, and PI mediated by personal attitude. A web-based survey was utilized to capture quantitative data from a random sample of 330 multicultural consumer group participants. The results of the study indicated that consumers' ethnicity substantially moderated the mediation effect of personal attitude in the relationships between subjective norms, health factor, Halal certificate, packaging design, past experience factor, price factor, and PI in the model. The findings contributed to understanding of the factors that influenced the PI of consumers from diverse sociocultural contexts in the market for natural products. It contributed directly to natural product marketing and industry.
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Affiliation(s)
- Ahmed Abdulkareem Najm
- Department of Food Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
| | - Sarah Abdulkareem Salih
- Department of Architecture, Faculty of Design and Architecture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Shazrul Fazry
- Department of Food Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
- Tasik Chini Research Center, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
| | - Douglas Law
- Faculty of Health and Life Sciences, Inti International University, Nilai, Negeri Sembilan, Malaysia
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Amin R, Rancan F, Hillmann K, Blume‐Peytavi U, Vogt A, Kottner J. Effects of a leave-on product on the strength of the dermoepidermal junction: An exploratory, intraindividual, randomized controlled trial in older adults with dry skin. Health Sci Rep 2024; 7:e1985. [PMID: 38505682 PMCID: PMC10949320 DOI: 10.1002/hsr2.1985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 02/08/2024] [Accepted: 03/03/2024] [Indexed: 03/21/2024] Open
Abstract
Background and Aims Skin aging is associated with dry skin and a decrease of the strength of the dermoepidermal adhesion, which increases the risk for lacerations (skin tears). Application of leave-on products improves dry skin and seems to reduce skin tear incidence. The aim of this study was to measure the effects of a humectant containing leave-on product on the strength of the dermoepidermal junction in older adult participants with dry skin. Methods A randomized controlled trial using a split body design was conducted. One forearm was randomly selected and treated with a lipophilic leave-on product containing 5% urea for 8 weeks. The other forearm was the control. The parameters stratum corneum hydration (SCH), transepidermal water loss, pH, roughness, epidermal thickness and skin stiffness were measured at the baseline, Weeks 4 and 8. At Week 8, suction blisters were created and time to blistering was measured. Blister roofs and interstitial fluid were analyzed for Interleukin-1α, 6 and 8. Results Twelve participants were included. After 8 weeks treatment, SCH was higher (median difference 11.6 AU), and the overall dry skin score (median difference -1) and median roughness (Rz difference -12.2 µm) were lower compared to the control arms. The median group difference for Interleukin-1α was -452 fg/µg total protein (TP) in the blister roofs and -2.2 fg/µg TP in the blister fluids. The median time to blister formation was 7.7 min higher compared to the control arms. Conclusion The regular application of humectant containing leave-on products improves dry skin and seems to lower inflammation and contribute to the strengthening of the dermoepidermal adhesion. This partly explains how the use of topical leave-on products helps to prevent skin tears.
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Affiliation(s)
- Ruhul Amin
- Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, Charité—Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt‐Universität zu BerlinBerlinGermany
- BCSIR Laboratories DhakaBangladesh Council of Scientific and Industrial ResearchDhakaBangladesh
| | - Fiorenza Rancan
- Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, Charité—Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt‐Universität zu BerlinBerlinGermany
| | - Kathrin Hillmann
- Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, Charité—Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt‐Universität zu BerlinBerlinGermany
| | - Ulrike Blume‐Peytavi
- Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, Charité—Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt‐Universität zu BerlinBerlinGermany
| | - Annika Vogt
- Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, Charité—Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt‐Universität zu BerlinBerlinGermany
| | - Jan Kottner
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt‐Universität zu Berlin, Institute of Clinical Nursing Science, Charitéplatz 1BerlinGermany
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Amin R, Völzer B, El Genedy-Kalyoncu M, Blume-Peytavi U, Kottner J. Skin care types, frequencies and products: A cross-sectional study in German institutional long-term care. J Tissue Viability 2024:S0965-206X(24)00010-X. [PMID: 38360494 DOI: 10.1016/j.jtv.2024.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 01/26/2024] [Accepted: 02/09/2024] [Indexed: 02/17/2024]
Abstract
AIM The aim of the study was to describe types and frequencies of skin care interventions and products provided in institutional long-term care. MATERIALS AND METHODS Baseline data from a cluster randomized controlled trial conducted in nursing homes in Berlin, Germany was collected before randomization. Numbers, proportions and frequencies of washing, showering and bathing, and the application of leave-on products were calculated. Product labels were iteratively and inductively categorized into overarching terms and concepts. RESULTS A total of n = 314 residents participated in the study. In the majority, washing of the whole body was done once daily, and showering was performed once per week or more rarely. The majority received leave-on products daily on the face and once per week on the whole body. Most of the skin care interventions were delivered by nurses. There was marked heterogeneity in terms of product names, whereas the product names reveal little about the ingredients or composition. CONCLUSION Personal hygiene and cleansing interventions are major parts of clinical practice in long-term care. Daily washing is a standard practice at the moment. In contrast, leave-on products are used infrequently. To what extent the provided care promotes skin integrity is unclear. Due to the heterogeneity and partly misleading labels of skin care products, informed decision making is difficult to implement at present. CLINICALTRIALS GOV IDENTIFIER NCT03824886.
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Affiliation(s)
- Ruhul Amin
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, 10117, Berlin, Germany; BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Bettina Völzer
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Clinical Nursing Science, Charitéplatz 1, 10117, Berlin, Germany
| | - Monira El Genedy-Kalyoncu
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Clinical Nursing Science, Charitéplatz 1, 10117, Berlin, Germany
| | - Ulrike Blume-Peytavi
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, 10117, Berlin, Germany
| | - Jan Kottner
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Clinical Nursing Science, Charitéplatz 1, 10117, Berlin, Germany.
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Amin R, Völzer B, Genedy-Kalyoncu ME, Blume-Peytavi U, Kottner J. The prevalence and severity of dry skin and related skin care in older adult residents in institutional long-term care: A cross-sectional study. Geriatr Nurs 2023; 54:331-340. [PMID: 37950968 DOI: 10.1016/j.gerinurse.2023.10.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/13/2023]
Abstract
OBJECTIVES To identify possible factors associated with different severities of xerosis cutis and to describe possible associations between (skin) care dependency and application of moisturizers. DESIGN Cross-sectional study using baseline data from a cluster-randomized controlled trial. Demographic and health characteristics, skin physiological measurements, functional abilities and application of moisturizers were compared between the participants with mild and severe dry skin. Frequency of moisturization were also compared based on the participants' skin care dependency. RESULTS The more distal the body area, the more severe xerosis were observed. There were no or minor differences between the groups, except for the stratum corneum hydration and skin surface pH. Participants with severe xerosis received moisturizers less often. Skin care dependent residents received moisturizers frequently. CONCLUSION There is under-application regarding xerosis cutis treatment in long-term care. Skin care provided by nurses, in adequate frequencies, might be helpful compared to skin care performed by the residents themselves.
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Affiliation(s)
- Ruhul Amin
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, 10117 Berlin, Germany; BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Bettina Völzer
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Clinical Nursing Science, Charitéplatz 1, 10117 Berlin, Germany
| | - Monira El Genedy-Kalyoncu
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Clinical Nursing Science, Charitéplatz 1, 10117 Berlin, Germany
| | - Ulrike Blume-Peytavi
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, 10117 Berlin, Germany
| | - Jan Kottner
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Clinical Nursing Science, Charitéplatz 1, 10117 Berlin, Germany.
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Fastner A, Hauss A, Kottner J. Skin assessments and interventions for maintaining skin integrity in nursing practice: An umbrella review. Int J Nurs Stud 2023; 143:104495. [PMID: 37099847 DOI: 10.1016/j.ijnurstu.2023.104495] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 03/29/2023] [Accepted: 03/30/2023] [Indexed: 04/08/2023]
Abstract
BACKGROUND Daily skin care routines are fundamental aspects of clinical nursing practice. Providing skin care, including skin cleansing and application of leave-on products have substantial impact on the prevention and treatment of a number of skin conditions. There are hundreds of individual studies about skin risks, classifications, skin conditions, prevention and treatment. OBJECTIVE To summarise the overall evidence regarding 1) risk factors associated with xerosis cutis, incontinence-associated dermatitis/diaper dermatitis, intertrigo, skin tears, 2) the performance of diagnostic tests and/or classifications addressing the severity and/or signs and symptoms of xerosis cutis, incontinence-associated dermatitis/diaper dermatitis, intertrigo, skin tears, 3) the effects of skin cleansing/care interventions for the maintenance and promotion of skin integrity in all age groups, 4) effects of skin cleansing/care interventions for the prevention of xerosis cutis, incontinence-associated dermatitis/diaper dermatitis, intertrigo, skin tears in all age groups. DESIGN Umbrella review. DATA SOURCES A systematic search in MEDLINE and Embase (via OvidSP), Cochrane and Epistemonikos was conducted. Reference lists and experts were consulted for potentially missed reviews. REVIEW METHODS Two reviewers screened titles/abstracts and full-texts independently. After rating the risk of bias only low to high overall confidence (AMSTAR 2) and low risk of bias (ROBIS) reviews were included. RESULTS Twelve systematic reviews were included. Due to substantial heterogeneity regarding study designs, methods, and outcomes all authors presented findings in a narrative synthesis. The validity and reliability of the International Skin Tear Advisory Panel classification is supported by moderate quality evidence, and the reliability and criterion validity for Skin Tear Audit Research were rated insufficient. Overall, review results indicate that structured skin care programs are preferable to unstructured skin care with classic soap and water for maintaining skin integrity in general, preventing skin tears, and to prevent and treat xerosis cutis and incontinence-associated dermatitis. All reviews focusing on leave-on products for the prevention and treatment of incontinence-associated dermatitis and diaper dermatitis indicate the effectiveness of barrier films or lipophilic leave-on products in adults, elderly people and paediatric care, but could not establish the superiority of any product. CONCLUSIONS The majority of systematic reviews in the field of skin care is at high risk of bias and should not be used for evidence-based practice. Overall, evidence indicates, that structured skin care programs containing low-irritating cleansers and application of leave-on products are beneficial to maintain skin integrity and prevent skin damage across a wide range of different skin conditions across the life span.
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Mijaljica D, Spada F, Harrison IP. Skin Cleansing without or with Compromise: Soaps and Syndets. Molecules 2022; 27:molecules27062010. [PMID: 35335373 PMCID: PMC8954092 DOI: 10.3390/molecules27062010] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/18/2022] [Accepted: 03/18/2022] [Indexed: 11/16/2022]
Abstract
Products designed to cleanse the skin commonly do so through surfactant action, which leads to the lowering of the surface tension of the skin to facilitate the removal of dirt from its surface. Skin cleansers generally come in one of two types: soap-based and synthetic detergents, or syndets. While the latter can effectively maintain the native skin structure, function and integrity, the former tends to negatively affect the skin by causing barrier disruption, lipid dissolution and pH alteration. Despite this, soap is still often preferred, possibly due to the negative connotations around anything that is not perceived as 'natural'. It is, therefore, important that the science behind cleansers, especially those designed for the maintenance of healthy skin and the management of common skin conditions such as eczema, be understood by both formulators and end-users. Here, we carefully weigh the advantages and disadvantages of the different types of surfactant-the key ingredient(s) in skin cleansers-and provide insight into surfactants' physicochemical properties, biological activity and potential effects. Fine-tuning of the complex characteristics of surfactants can successfully lead to an 'optimal' skin cleanser that can simultaneously be milder in nature, highly effective and beneficial, and offer minimal skin interference and environmental impact.
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Wilborn D, Kottner J, Hillmann K, Xu S, Konietschke F, Blume-Peytavi U. Interrelationships between Skin Structure, Function, and Microbiome of Pregnant Females and Their Newborns: Study Protocol for a Prospective Cohort Study. Dermatol Res Pract 2021; 2021:4163705. [PMID: 34840564 DOI: 10.1155/2021/4163705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 10/28/2021] [Indexed: 11/17/2022] Open
Abstract
Background Pregnancy leads to several skin changes, but evidence about structural and functional skin changes is scarce. Findings on skin structure and function in children in their first year reveal rapid skin maturation, but evidence indicates that in particular, water holding and transport mechanisms are different from adults. Important questions include whether maternal cutaneous properties predict infant skin condition, and if so, how. This is especially relevant for the skin's microbiome because it closely interacts with the host and is assumed to play a role in many skin diseases. Therefore, the study objective is to explore characteristics of skin and hair of pregnant women and their newborns during pregnancy and in the first six months after delivery and their associations. Methods The study has an observational longitudinal design. We are recruiting pregnant females between 18 and 45 years using advertisement campaigns in waiting areas of gynecologists and hospital's outpatient services. A final sample size of n = 100 women is the target. We perform noninvasive, standardized skin, hair, and skin microbiome measurements. We establish the baseline visit during pregnancy until at the latest four weeks before delivery. We schedule follow-up visits four weeks and six months after birth for mothers and their newborns. We will calculate descriptive statistical methods using frequencies and associations over time depending on scale levels of the measurements. Discussion. The majority of previous studies that have investigated infants' skin microbiome and its associations used cross-sectional designs and focused on selected characteristics in small samples. In our longitudinal study, we will characterize a broad range of individual and environmental characteristics of mothers and their newborns to evaluate interrelationships with skin parameters and their changes over time. Considering the combination of these multiple variables and levels will allow for a deeper understanding of the complex interrelationship of the newborn's skin maturation. This trial is registered with ClinicalTrials.gov (Identifier: NCT04759924).
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Pensado A, McGrogan A, White KAJ, Bunge AL, Guy RH, Delgado-Charro MB. Assessment of dermal bioavailability: predicting the input function for topical glucocorticoids using stratum corneum sampling. Drug Deliv Transl Res 2021; 12:851-861. [PMID: 34599470 PMCID: PMC8888398 DOI: 10.1007/s13346-021-01064-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2021] [Indexed: 12/05/2022]
Abstract
Predicting the dermal bioavailability of topically delivered drugs is challenging. In this work, minimally invasive stratum corneum (SC) sampling was used to quantify the delivery of betamethasone valerate (BMV) into the viable skin. Betnovate® cream (0.1% w/w BMV) was applied at three doses (2, 5, and 10 mg cm−2) to the ventral forearms of 12 healthy volunteers. The mass of drug in the SC was measured using a validated tape-stripping method (a) after a 4-h “uptake” period, and (b) following a 6-h “clearance” period subsequent to cream removal. Concomitantly, the skin blanching responses to the same doses were assessed with a chromameter over 22 h post-application. BMV uptake into the SC was significantly higher for the 5 mg cm−2 dose compared to those of 2 and 10 mg cm−2. In all cases, ~30% of the drug in the SC at the end of the uptake period was cleared in the subsequent 6 h. From the SC sampling data, the average drug flux into the viable epidermis and its first-order elimination rate constant from the SC were estimated as 4 ng cm−2 h−1 and 0.07 h−1, respectively. In contrast, skin blanching results were highly variable and insensitive to the dose of cream applied. The SC sampling method was able to detect a 50% difference between two applied doses with 80% power; detection of a 20% difference would require a larger sample size. SC sampling enabled quantitative metrics describing corticosteroid delivery to the viable epidermis to be determined.
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Affiliation(s)
- Andrea Pensado
- Department of Pharmacy & Pharmacology, University of Bath, Bath, UK.,Present address: R&D Cluster Programs Section, Technology Development and Innovation Center, Okinawa Institute of Science and Technology, Okinawa, Japan
| | - Anita McGrogan
- Department of Pharmacy & Pharmacology, University of Bath, Bath, UK
| | - K A Jane White
- Department of Mathematical Sciences, University of Bath, Bath, UK
| | - Annette L Bunge
- Chemical and Biological Engineering, Colorado School of Mines, Golden, CO, USA
| | - Richard H Guy
- Department of Pharmacy & Pharmacology, University of Bath, Bath, UK
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Oakley R, Arents BWM, Lawton S, Danby S, Surber C. Topical corticosteroid vehicle composition and implications for clinical practice. Clin Exp Dermatol 2020; 46:259-269. [PMID: 33108015 DOI: 10.1111/ced.14473] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 11/29/2022]
Abstract
This narrative review highlights the therapeutic significance of topical corticosteroid (TCS) vehicles and provides subsequent guidance to improve clinical and research outcomes. A greater understanding of the relationship between the topical vehicle, corticosteroid and skin is needed to ensure safer, more effective treatment for patients. Topical vehicles are not inert and can affect TCS bioavailability, due to the ability of their composition to positively or negatively influence skin status and change the physiochemical characteristics of an inherent corticosteroid. However, this principle is not commonly understood, and has contributed to inconsistencies in potency classification systems. This review provides an insight into the research methods and standardization needed to determine TCS product bioavailability. It identifies formulation components responsible for vehicle composition that underpin the quality, stability, compounding and functionalities of vehicle ingredients. This helps to contextualize how topical vehicles can be responsible for clinically significant effects, and how their composition gives products unique properties. In turn, this facilitates a more in-depth understanding of which resources offer information to inform the best selection of TCS products and why products should be prescribed by brand or manufacturer. This review will better equip clinicians and formulary teams to appraise products. It will also inform prescribing of Specials and why products should not be manipulated. The recommendations, accompanied by patient perspectives on using TCS products, assist clinical decision-making. They also identify the need for research into concomitant application of TCS products with other topical therapies.
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Affiliation(s)
- R Oakley
- St George's University Hospitals NHS Foundation Trust, London, UK
| | - B W M Arents
- Dutch Association for People with Atopic Dermatitis, Nijkerk, Netherlands
| | - S Lawton
- Rotherham NHS Foundation Trust, Rotherham, UK
| | - S Danby
- Sheffield Dermatology Research, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield Medical School, Sheffield, UK
| | - C Surber
- Institute of Hospital Pharmacy, Department of Dermatology and Department of Pharmacy, University of Basel, Basel, Switzerland
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