Sunscreen formulations do not interfere with sweat cooling during exercise
| Autor: | K Meyer, Hao Ou-Yang, G Grove, T Houser |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Adult
Aging medicine.medical_specialty Sun protection Pharmaceutical Science Sweating Dermatology SWEAT Clinical study Young Adult 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine Colloid and Surface Chemistry Untreated control Drug Discovery medicine Humans Sweat Exercise integumentary system business.industry Skin temperature 030229 sport sciences Skin cooling Chemistry (miscellaneous) Lotion Female Skin Temperature business Sunscreening Agents Thermal balance Body Temperature Regulation |
| Zdroj: | International Journal of Cosmetic Science. 40:87-92 |
| ISSN: | 0142-5463 |
| Popis: | Objective Sweating plays a critical role in maintaining thermal balance and keeping skin cool during exercise. People often wear sunscreens on hot summer days for sun protection. Most recreational sunscreens are designed to be water- and sweat-resistant, so that sweating will not remove or compromise the protection. The objective of this study was to determine whether wearing sweat-resistant sunscreen might impede natural sweating, potentially interfering with thermal regulation and resulting in the elevation of skin temperature. Methods We conducted a controlled, randomized, split-face and split-arm clinical study with 24 female subjects wearing an SPF 70 lotion sunscreen on half of the face and an SPF 70 spray sunscreen on one of the forearms at a dosage of 2 mg cm-2 . Following sunscreen application, subjects participated in two sessions of indoor exercise to induce clearly visible sweating. Results We found that both skin temperatures and sweat evaporation rates were significantly elevated after each session, yet there were no significant differences in either skin temperatures or sweat rates between the treated and untreated control sites at any time point for any of the skin sites measured. Conclusion We conclude that the application of tested sweat-resistant sunscreen lotions and sprays does not have any measurable effects on skin cooling by natural sweating process. People should continue to use these sunscreens during recreational activities. |
| Databáze: | OpenAIRE |
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