Evaluating the UVA protection of commercially available sunscreens.
Because the protection factor of sunscreens concerns only UVB protection, usually only a little is known about the protection offered in the UVA range. Photoprotection against ultraviolet A (UVA) by five commercially available sunscreens and their components was evaluated in humans, with erythema and pigmentation used as end points. Because UVA-induced tanning obscures a UVA-erythema, quantitative analysis of UVA-erythema cannot be used as the end point in this study. All products provided low UVA protection factor (1.02-1.9). The sunscreen which contain 3 per cent Parsol 1789 was the most effective product and significantly better than the other (p < 0.0001).
Leenutaphong
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Department of Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.
D000293:Adolescent; D000328:Adult; D005069:Evaluation Studies as Topic; D006801:Humans; D008297:Male; D008875:Middle Aged; D004366:Nonprescription Drugs; D013471:Sunburn / Q000517:prevention & control*; D013473:Sunscreening Agents / Q000494:pharmacology*; D014466:Ultraviolet Rays / Q000009:adverse effects* / Q000145:classification
D004366:Nonprescription Drugs; D013473:Sunscreening Agents