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Journal of the American Academy of Dermatology
Volume 4, n° 5
pages 566-570 (mai 1981)
Doi : 10.1016/S0190-9622(81)70058-6
Clinical and laboratory study

An appraisal of the efficacy and substantivity of the new high-potency sunscreens
 

Kays H. Kaidbey, M.D. , 1, Albert M. Kligman, M.D., Ph.D. 1
Philadelphia, PA, USA 

*Reprint requests to: Dr. Kays H. Kaidbey, Duhring Laboratories, Department of Dermatology, 244 Medical Education Bldg., 36th and Hamilton Walk/GM, Philadelphia, PA 19104.
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Several recently introduced sunscreens were evaluated using test procedures proposed by the Food and Drug Administration. The newer sunscreens proved to be highly protective, possessing Sun Protection Factors (SPF) of 15 or greater. Improvement in efficacy was achieved by the incorporation of a combination of active ingredients at larger concentrations, and by superior vehicle design. A procedure is also described for the laboratory assessment of wash-off resistance, which provides data comparable to those obtained from swimming tests. Two of the tested sunscreens resisted wash-off after 40 minutes of swimming.

The full text of this article is available in PDF format.
1  From The Duhring Laboratories, Department of Dermatology, University of Pennsylvania.

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