42 TESTING
Figure 6: The skin acidic protection mantle is continuously attacked by friction, cleaners and sanitizers.
with colleagues, friends and customers. It can be caused by different deficiencies and can be treated by using products that are often based on dripping hyaluronic acid solution into the open eye. One reason for a dry eye is a deficiency of the tear film. The tear film of the eye consists of three layers: the hydrophilic mucus layer directly on top of the hydrophobic cornea, covered by an aqueous layer. The outmost lipid layer prevents evaporation of tear liquid. A high ocular water loss can take place when this outer lipid film is impaired. 16 Lipids in the tear film can be easily measured by meibometry.
Conclusion Today, almost every cosmetic brand offers products dedicated to the complex skin condition we are currently facing in this pandemic situation already lasting 18 months. However, the marketing of these products is not very original and mostly based on phrases. Scientific claims to proof that the products are
Figure 7: Fluorescent UV images with the Visiopor® show the intensity and number of acneic lesions.
efficient for the respective skin problems are often missing, even though various easy-to- use methods are available. For the consumer, it would be helpful to
better understand what the advertised products can really do for their skin. In the end we all benefit from products especially designed to meet the current skin challenge.
References 1. WHO: Impact of COVID-19 on people’s livelihoods, their health and our food systems, October 2020,
https://www.who.int/news/
2. Coats JG, Maktabi B, Abou-Dahech MS, Baki G. Blue Light Protection, Part I—Effects of blue light on the skin, Journal of Cosmetic Dermatology 2020
3.
https://editorialist.com/beauty/mascne-mask- acne-causes-and-treatments/
4. Campbell V, Middleton D, Donnelly J, Hunter H. Localized mid-face miliaria as a consequence of filtering face piece respirator use during the COVID-19 pandemic, J Eur Acad
PC Dermatol Venereol. 2020 Jun 4
5. Lan J, Song Z, Miao X, et al.: Skin damage among health care workers managing coronavirus disease-2019, J Am Acad Dermatol, 2020;82(5)
6. A. Lien-Lun Chien: Coronavirus: Tips to Avoid “Maskne” Skin Irritation, https://www.
hopkinsmedicine.org/health/conditions-and- diseases/coronavirus/coronavirus-tips-to- avoid-maskne-skin-irritation
7. R. Grabenhofer: N95 Mask-wearing Found Not to Affect Microbiome, https://www.
cosmeticsandtoiletries.com/research/biology/ N95-Mask-wearing-Found-Not-to-Affect- Microbiome
8. Hua W, Zuo Y, Wan R, et al. Short-term Skin Reactions Following Use of N95 Respirators and Medical Masks, Contact Dermatitis, 2020;83(2)
9. Bäsler K, et al. The role of tight junctions in skin barrier function and dermal absorption. J. Control Release, 016 Nov 28;242:105-118.
10. Berardesca E. et
al.The revised EEMCO guidance for the in vivo measurement of water in the skin, Skin Research & Technology 2018; 24: 351-358,
11. Egelrud T. Desquamation in the Stratum Corneum, Acta Derm. Venereol. 2000; 208: 44-45
12. Dréno B, et al: Microbiome in healthy skin, update for dermatologists, J Eur Acad Dermatol Venereol. 2016; 30(12): 2038–2047
13. Okoro EO. et al. Study of Facial Sebum Levels and Follicular Red Fluorescence in Patients with Acne Vulgaris in Nigeria, Dermatology 2016: 232:156–161
14. Dobrev H. Fluorescence Diagnostic in Patients with Acne, Photodermatol. Photoimmunol. Photomed. 2010; 26(6): 285-289.
15. Moshirfar M. et al.: Face Mask-Associated Ocular Irritation and Dryness, Ophthalmol. Ther. 2020; 9: 397–400,
Figure 8: The measurement tape for the Meibometer will reveal the lipids content of the tear film. PERSONAL CARE June 2021
16. Yokoi N. et al. Assessment of Meibomian Gland Function in Dry Eye Using Meibometry, Arch. Ophthalmol. 1199; 117: 723-729
www.personalcaremagazine.com
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