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Botvid S, Bennike NH, Simonsen AB, Johansen JD, Uter W. Contact sensitization to fragrance mix I and fragrance mix II among European dermatitis patients: A systematic review. Contact Dermatitis 2024. [PMID: 38945918 DOI: 10.1111/cod.14618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 05/21/2024] [Accepted: 05/25/2024] [Indexed: 07/02/2024]
Abstract
BACKGROUND Fragrance substances are a frequent cause of contact allergy worldwide. Fragrance exposure varies by sex, age and possibly country, influenced by cosmetic availability, environmental conditions and cultural practices. OBJECTIVES To systematically review and gather prevalence of sensitization to fragrance mix I (FM I) and fragrance mix II (FM II) in consecutively patch-tested European dermatitis patients. METHOD A total of 4134 publications on patch test results of European dermatitis patients, published from 1981 to 2022, were systematically reviewed according to a previously registered and published PROSPERO protocol. RESULTS Eighty-four eligible original articles were analysed. Overall prevalence of sensitization to fragrance mix I (FM I) was 6.81% (95% CI: 6.37-7.28), and FM II was 3.64% (95% CI: 3.3-4.01). Sensitization to FM I was most prevalent in Central and Eastern Europe and to FM II in Western Europe. No clear time trends were observed. Among paediatric dermatitis patients, sensitization prevalence for FM I and FM II was 4.09% (95% CI: 3.37-4.96) and 2.17% (95% CI: 1.53-3.07). CONCLUSION The frequency of positive patch test results for both FMI and FMII remains high. Sensitization is also prevalent among children. Enhanced regulation and labelling of cosmetic products play a vital role in averting exposure and sensitization to fragrance allergens.
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Affiliation(s)
- Sofia Botvid
- The National Allergy Research Centre (Videncenter for Allergi), Department of Allergy, Dermatology and Venerology, Copenhagen University Hospital Herlev-Gentofte, Gentofte Hospital, Hellerup, Denmark
- Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Niels H Bennike
- The National Allergy Research Centre (Videncenter for Allergi), Department of Allergy, Dermatology and Venerology, Copenhagen University Hospital Herlev-Gentofte, Gentofte Hospital, Hellerup, Denmark
| | - Anne Birgitte Simonsen
- The National Allergy Research Centre (Videncenter for Allergi), Department of Allergy, Dermatology and Venerology, Copenhagen University Hospital Herlev-Gentofte, Gentofte Hospital, Hellerup, Denmark
- Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Jeanne Duus Johansen
- The National Allergy Research Centre (Videncenter for Allergi), Department of Allergy, Dermatology and Venerology, Copenhagen University Hospital Herlev-Gentofte, Gentofte Hospital, Hellerup, Denmark
- Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Wolfgang Uter
- Department of Medical Informatics, Biometry and Epidemiology, University of Erlangen/Nürnberg, Erlangen, Germany
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Yang B, He A, Bu BB, Zhuo G, Zhou QZ, He JH, Liu L, Huang WL, Zhao X. Clinical efficacy of intradermal type I collagen injections in treating skin photoaging in patients from high-altitude areas. World J Clin Cases 2024; 12:2713-2721. [PMID: 38899303 PMCID: PMC11185327 DOI: 10.12998/wjcc.v12.i16.2713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 05/29/2024] Open
Abstract
BACKGROUND Photoaging, a result of chronic sun exposure, leads to skin damage and pigmentation changes. Traditional treatments may have limitations in high-altitude areas like Yunnan Province. Intradermal Col Ι injections stimulate collagen production, potentially improving skin quality. This study aims to assess the efficacy and safety of this treatment for photoaging. AIM To evaluate the efficacy and safety of intradermal type Ι collagen (Col Ι) injection for treating photoaging. METHODS This prospective, self-controlled study investigated the impact of intradermal injections of Col Ι on skin photodamage in 20 patients from the Yunnan Province. Total six treatment sessions were conducted every 4 wk ± 3 d. Before and after each treatment, facial skin characteristics were quantified using a VISIA skin detector. Skin thickness data were assessed using the ultrasound probes of the Dermalab skin detector. The Face-Q scale was used for subjective evaluation of the treatment effect by the patients. RESULTS The skin thickness of the right cheek consistently increased after each treatment session compared with baseline. The skin thickness of the left cheek significantly increased after the third through sixth treatment sessions compared with baseline. The skin thickness of the right zygomatic region increased after the second to sixth treatment sessions, whereas that of the left zygomatic region showed a significant increase after the fourth through sixth treatment sessions. The skin thickness of both temporal regions significantly increased after the fifth and sixth treatment sessions compared with baseline (P < 0.05). These findings were also supported by skin ultrasound images. The feature count for the red areas and wrinkle feature count decreased following the treatment (P < 0.05). VISIA assessments also revealed a decrease in the red areas after treatment. The Face-Q-Satisfaction with Facial Appearance Overall and Face-Q-Satisfaction with Skin scores significantly increased after each treatment session. The overall appearance of the patients improved after treatment. CONCLUSION Intradermal Col Ι injection improves photoaging, with higher patient satisfaction and fewer adverse reactions, and could be an effective treatment method for populations residing in high-altitude areas.
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Affiliation(s)
- Bin Yang
- Department of Plastic and Cosmetic Surgery, The Affiliated Calmette Hospital of Kunming Medical University, The First People's Hospital of Kunming, Calmette Hospital Kunming, Kunming 650224, Yunnan Province, China
| | - Ao He
- Department of Plastic and Cosmetic Surgery, The Affiliated Calmette Hospital of Kunming Medical University, The First People's Hospital of Kunming, Calmette Hospital Kunming, Kunming 650224, Yunnan Province, China
| | - Bin-Bin Bu
- Department of Dermatology, The People's Hospital of Chuxiong Yi Autonomous Prefecture, Chuxiong Yi Autonomous Prefecture 675099, Yunnan Province, China
| | - Gong Zhuo
- Department of Plastic and Cosmetic Surgery, The Affiliated Calmette Hospital of Kunming Medical University, The First People's Hospital of Kunming, Calmette Hospital Kunming, Kunming 650224, Yunnan Province, China
| | - Qing-Zhu Zhou
- Department of Plastic and Cosmetic Surgery, The Affiliated Calmette Hospital of Kunming Medical University, The First People's Hospital of Kunming, Calmette Hospital Kunming, Kunming 650224, Yunnan Province, China
| | - Jia-Hang He
- Department of Plastic and Cosmetic Surgery, The Affiliated Calmette Hospital of Kunming Medical University, The First People's Hospital of Kunming, Calmette Hospital Kunming, Kunming 650224, Yunnan Province, China
| | - Liu Liu
- Department of Plastic and Cosmetic Surgery, The Affiliated Calmette Hospital of Kunming Medical University, The First People's Hospital of Kunming, Calmette Hospital Kunming, Kunming 650224, Yunnan Province, China
| | - Wen-Li Huang
- Department of Plastic and Cosmetic Surgery, The Affiliated Calmette Hospital of Kunming Medical University, The First People's Hospital of Kunming, Calmette Hospital Kunming, Kunming 650224, Yunnan Province, China
| | - Xian Zhao
- Department of Plastic and Cosmetic Surgery, The Affiliated Calmette Hospital of Kunming Medical University, The First People's Hospital of Kunming, Calmette Hospital Kunming, Kunming 650224, Yunnan Province, China
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Goh CF. Diversity of Asian skin: A review on skin biophysical properties. Exp Dermatol 2024; 33:e14959. [PMID: 37864434 DOI: 10.1111/exd.14959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 08/03/2023] [Accepted: 09/27/2023] [Indexed: 10/22/2023]
Abstract
Asian is home to dozens of different ethnic groups that are characterised by fascinating social and cultural variations. Unfortunately, existing literature on the skin properties of Asians tends to group this diverse population solely based on skin colour, perpetuating the misconception and stereotype that all Asian skin is the same. While Asia is one of the largest continents in the world, the difference in the geographical location and climate have long shaped the population into various ethnic groups with significant differences in the collective and diverse customs, traditions, cultures and living habits. The diverse ethnic groups in this region hint us that their skin biophysical characteristics can be very different from each other. This review features the profiling of the distinctive skin biophysical properties of Asians. We learn more about the different ethnic groups in Asia and acknowledge the unique skin biophysical properties even from the same country.
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Affiliation(s)
- Choon Fu Goh
- Discipline of Pharmaceutical Technology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Penang, Malaysia
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4
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Hui-Beckman JW, Goleva E, Leung DYM, Kim BE. The impact of temperature on the skin barrier and atopic dermatitis. Ann Allergy Asthma Immunol 2023; 131:713-719. [PMID: 37595740 DOI: 10.1016/j.anai.2023.08.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/31/2023] [Accepted: 08/02/2023] [Indexed: 08/20/2023]
Abstract
Climate change is a global threat to public health and causes or worsens various diseases including atopic dermatitis (AD), allergic, infectious, cardiovascular diseases, physical injuries, and mental disorders. The incidence of allergy, such as AD, has increased over the past several decades, and environmental factors such as climate change have been implicated as a potential mechanism. A substantial amount of literature has been published on the impact of climate factors, including cold and hot temperatures, on the skin barrier and AD. Studies in several countries have found a greater incidence of AD in children born in the colder seasons of fall and winter. The effect of cold and warm temperatures on itch, skin flares, increased outpatient visits, skin barrier dysfunction, development of AD, and asthma exacerbations have been reported. Understanding mechanisms by which changes in temperature influence allergies is critical to the development of measures for the prevention and treatment of allergic disorders, such as AD and asthma. Low and high temperatures induce the production of proinflammatory cytokines and lipid mediators such as interleukin-1β, thymic stromal lymphopoietin, and prostaglandin E2, and cause itch and flares by activation of TRPVs such as TRPV1, TRPV3, and TRPV4. TRPV antagonists may attenuate temperature-mediated itch, skin barrier dysfunction, and exacerbation of AD.
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Affiliation(s)
| | - Elena Goleva
- Department of Pediatrics, National Jewish Health, Denver, Colorado
| | - Donald Y M Leung
- Department of Pediatrics, National Jewish Health, Denver, Colorado.
| | - Byung Eui Kim
- Department of Pediatrics, National Jewish Health, Denver, Colorado
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Seno SI, Shimazu H, Kobayashi H, Kogure E, Watanabe A, Isoyama T. Quantitative evaluation of skin barrier function using water evaporation time related to transepidermal water loss. Skin Res Technol 2023; 29:e13242. [PMID: 36426825 PMCID: PMC9838770 DOI: 10.1111/srt.13242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 11/05/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Transepidermal water loss (TEWL) is often used as an index for skin barrier function. The skin barrier tester, SBT-100 (Rousette Strategy Inc), measures the TEWL, water evaporation time, and time constant by contacting the skin and diffusing water into the closing measurement chamber. However, the relationship between the TEWL and time constant has not been sufficiently investigated. This study involved analyzing the underlying measurement principle and obtaining data through two experiments. MATERIALS AND METHODS The TEWL and time constant were measured using SBT-100. Experiment 1 produced a simple simulation model for continuous water evaporation from the skin using a moisture-permeable film. In experiment 2, four skin sites of 43 healthy volunteers were examined from May to September 2018. RESULTS In experiment 1, the TEWL increased and time constant decreased, following an increase in humidity in the external environment. Both parameters demonstrated significant negative correlation (drying: ρ = -0.832, p < 0.001). For the 43 healthy volunteers who participated in experiment 2, their TEWL increased and time constant decreased in summer. For all skin measurement sites, both data demonstrated significant negative correlation (forehead: ρ = -0.909, p < 0.001; back of the left hand: ρ = -0.829, p < 0.001; left lateral elbow: ρ = -0.896, p < 0.001; left lateral malleolus: ρ = -0.865, p < 0.001). CONCLUSION Results indicated that the time constant is significantly correlated with TEWL. Furthermore, the time constant can be used as a parameter for evaluating skin barrier function.
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Affiliation(s)
- Shin-Ichiro Seno
- Faculty of Health Sciences, Kyorin University, Mitaka, Tokyo, Japan
| | - Hideaki Shimazu
- Faculty of Health and Medical Sciences, Hokuriku University, Kanazawa, Ishikawa, Japan
| | - Hiroko Kobayashi
- Faculty of Health Sciences, Kyorin University, Mitaka, Tokyo, Japan
| | - Eiki Kogure
- Faculty of Health Sciences, Kyorin University, Mitaka, Tokyo, Japan
| | - Atsushi Watanabe
- Faculty of Health Sciences, Kyorin University, Mitaka, Tokyo, Japan
| | - Takashi Isoyama
- Faculty of Health Sciences, Kyorin University, Mitaka, Tokyo, Japan
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Green M, Kashetsky N, Feschuk A, Maibach HI. Transepidermal water loss (TEWL): Environment and pollution-A systematic review. SKIN HEALTH AND DISEASE 2022; 2:e104. [PMID: 35677917 PMCID: PMC9168018 DOI: 10.1002/ski2.104] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 02/08/2022] [Indexed: 11/20/2022]
Abstract
Introduction Transepidermal water loss (TEWL) is an objective measurement of skin integrity measured as the amount of water lost across the stratum corneum. TEWL varies greatly across variables such as age and anatomic location, and disruptions in the skin barrier have been linked to inflammatory dermatoses such as psoriasis and atopic dermatitis. Impact of environmental conditions and pollution on TEWL has yet to be determined. Accordingly, this review summarizes effects of environmental conditions and pollution on TEWL. Methods A comprehensive literature search was performed using Embase, PubMed, and Web of Science to find human studies that provided data on environmental conditions and/or pollution and TEWL. Results In total, 15 studies were included, with 11 studies examining environmental and seasonal conditions on TEWL and four examining pollution. All studies examining pollution showed increased TEWL in people exposed to particulate matter or NO2. Contradictory results were found on the effects of season and climate across the 11 studies, with no consensus reached. Conclusion Exposure to pollution is reported to cause increases in TEWL, likely through free radical damage. Significant discrepancies exist among current literature as to the effects of season and climate on TEWL. There is a need to continue examining environmental variables other than temperature and relative humidity, such as atmospheric and steam pressure, that may impact TEWL.
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Affiliation(s)
- Maxwell Green
- Tulane University School of Medicine New Orleans Louisiana USA
| | - Nadia Kashetsky
- Faculty of Medicine Memorial University of Newfoundland St John's Newfoundland & Labrador Canada
| | - Aileen Feschuk
- Faculty of Medicine Memorial University of Newfoundland St John's Newfoundland & Labrador Canada
| | - Howard I Maibach
- Department of Dermatology University of California San Francisco San Francisco California USA
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Suehiro M, Numata T, Murakami E, Takahashi M, Saito R, Morioke S, Kamegashira A, Takahagi S, Hide M, Tanaka A. Real-world efficacy of proactive maintenance treatment with delgocitinib ointment twice weekly in adult patients with atopic dermatitis. Dermatol Ther 2022; 35:e15526. [PMID: 35441769 DOI: 10.1111/dth.15526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/11/2022] [Accepted: 04/17/2022] [Indexed: 11/27/2022]
Abstract
Previous studies have shown the efficacy of delgocitinib (DEL) ointment, a topical Janus kinase inhibitor, against atopic dermatitis (AD). However, there is no available information regarding the efficacy of DEL ointment in maintaining remission. Data of patients with AD who received remission maintenance therapy twice weekly with DEL or topical corticosteroid (TCS) on the affected skin of each upper limb were extracted from the medical records. Efficacy was assessed based on changes in pruritus numerical rating scale (NRS) score, stratum corneum hydration (SCH), erythema index (EI). Of 25 patients, four patients (16%) had eczema flare-ups on the TCS side and eight patients (32%) on the DEL side. The extent of change in each parameter between TCS- and DEL-treated areas of the skin did not differ significantly. The mean changes in the NRS and EI showed a slight improvement on the side treated with TCS and were slightly worse on the side treated with DEL. However, the SCH of the DEL group was maintained, while that of the TCS group worsened. TCS is more likely to be effective than DEL in terms of remission maintenance therapy. However, topical DEL is as effective as topical steroid in the maintenance therapy of AD in dry skin patients.
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Affiliation(s)
- Masataka Suehiro
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tomofumi Numata
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Emi Murakami
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masakazu Takahashi
- Graduate School of Innovation and Technology Management, Yamaguchi University, Yamaguchi, Japan
| | - Ryo Saito
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Satoshi Morioke
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Akiko Kamegashira
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shunsuke Takahagi
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Michihiro Hide
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Akio Tanaka
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Peer RP, Burli A, Maibach HI. Unbearable transepidermal water loss (TEWL) experimental variability: why? Arch Dermatol Res 2021; 314:99-119. [PMID: 33638033 DOI: 10.1007/s00403-021-02198-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 01/13/2021] [Accepted: 02/06/2021] [Indexed: 11/24/2022]
Abstract
Despite the wide breadth of research, much disparity exists in transepidermal water loss (TEWL) research data-possibly due to uncontrolled experimental variables. We determined whether such experimental variables significantly impact TEWL studies and cause this disparity. An initial literature search regarding TEWL was performed to determine potential confounding variables. A subsequent search procured relevant and representative studies investigating the impact of these variables on TEWL. Variables, such as age, anatomic site, and temperature, impact TEWL and should be controlled for in TEWL studies. Other variables, such as smoking and menstrual cycle, have inconclusive results or do not provide sufficient data breadth to make a conclusion regarding its effect, if such an effect exists, on TEWL metrics. Therefore, these variables require further research to determine their potential impact on TEWL. Matching for as many experimental variables as possible may reduce the disparity in TEWL data/conclusions.
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Affiliation(s)
- Reva P Peer
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA.
| | - Anuk Burli
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Howard I Maibach
- Department of Dermatology, University of California San Francisco, San Francisco, CA, USA
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Pan Y, Ma X, Zhao J, Yan S, Liu Q, Zhao H. The Interaction of Age and Anatomical Region Influenced Skin Biophysical Characteristics of Chinese Women. Clin Cosmet Investig Dermatol 2020; 13:911-926. [PMID: 33324083 PMCID: PMC7732761 DOI: 10.2147/ccid.s286402] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 11/19/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Ageing is an inevitable physiology process of humans, and skin biophysical parameters change owing to genetic and environmental factors in different ethnic populations. AIM To gain comprehensive data on the skin biophysical parameters of different anatomical regions and to explore the change trend of the skin characteristics associated with age for the indicated regions by generalized additive model. METHODS We measured various skin biophysical parameters on forehead, cheek, chin and inner forearm of 178 Chinese women aged between 20 and 64 years living in Beijing. These parameters comprised skin hydration, transepidermal water loss (TEWL), sebum content, erythema index (EI), melanin index (MI), L*a*b* values, individual typology angle (ITA) and pH, which were quantified by non-invasive instruments. RESULTS Comparing the skin parameters among the four test areas, we observed that the hydration, TEWL, EI and a* values were significantly higher for the face than for the forearm, but the L* and ITA values were just the opposite. The cheek was the lightest and brightest region with lowest sebum content, while the chin was much darker and the forehead was yellowish. Considering the change of the skin parameters with age, TEWL, sebum content and melanin and erythema indices had a linear relationship with age, whereas skin hydration, L, a, b, ITA and pH values exhibited a non-monotonic relationship. The turning points of these curves appeared almost at the thirties, showing the lightest and evenest skin color and more hydration, with lower pH values. CONCLUSION This study indicates that the skin biophysical characteristics of Chinese women were significantly affected by age and body regions.
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Affiliation(s)
- Yao Pan
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing100048, People’s Republic of China
- Beijing Key Laboratory of Plant Research and Development, Beijing100048, People’s Republic of China
| | - Xue Ma
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing100048, People’s Republic of China
- Beijing Key Laboratory of Plant Research and Development, Beijing100048, People’s Republic of China
| | - Jinfeng Zhao
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing100048, People’s Republic of China
- Beijing Key Laboratory of Plant Research and Development, Beijing100048, People’s Republic of China
| | - Shiyu Yan
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing100048, People’s Republic of China
- Beijing Key Laboratory of Plant Research and Development, Beijing100048, People’s Republic of China
| | - Qi Liu
- Beijing EWISH Testing Technology Co., Ltd, Beijing100142, People’s Republic of China
| | - Hua Zhao
- Department of Cosmetics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing100048, People’s Republic of China
- Beijing Key Laboratory of Plant Research and Development, Beijing100048, People’s Republic of China
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Dolečková I, Čápová A, Machková L, Moravčíková S, Marešová M, Velebný V. Seasonal variations in the skin parameters of Caucasian women from Central Europe. Skin Res Technol 2020; 27:358-369. [PMID: 33084174 DOI: 10.1111/srt.12951] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 09/07/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND The human skin is greatly affected by external factors such as UV radiation (UVR), ambient temperature (T), and air humidity. These factors oscillate during the year giving rise to the seasonal variations in the skin properties. The aim of this study was to evaluate the effect of seasons, environmental T, relative and absolute humidity on the skin parameters of Caucasian women, perform a literature review and discuss the possible factors lying behind the found changes. MATERIALS AND METHODS We measured stratum corneum (SC) hydration, transepidermal water loss (TEWL), sebum level, erythema index, and elasticity parameters R2 and R7 on the forehead and the cheek of Caucasian women from the Czech Republic throughout the year. We also performed a non-systematic literature review focused on the seasonal variations in these skin parameters. RESULTS We confirmed a well-documented low SC hydration and sebum production in winter. In spring, we found the lowest TEWL (on the forehead) and the highest SC hydration but also the highest erythema index and the lowest elasticity presumably indicating skin photodamage. For most of the skin parameters, the seasonal variations probably arise due to a complex action of different factors as we extensively discussed. CONCLUSION The data about the seasonal variations in the skin parameters are still highly inconsistent and further studies are needed for better understanding of the normal skin changes throughout the year.
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