A Study for Skin Protection Effect of Sunscreens: I . Comparison of Effectiveness by the Concentration.
- Author:
Ai Young LEE
;
Jai Il YOUN
;
Yoo Shin LEE
- Publication Type:Original Article
- MeSH:
4-Aminobenzoic Acid;
Benzoates;
Skin*;
Solar System;
Sun Protection Factor;
Sunscreening Agents*
- From:Korean Journal of Dermatology
1984;22(3):295-301
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study is to evaluate the effectiveness of these para-amino- benzoate, benzophenone and cinnamate sunscreens in the same base(cream) and the effect of concentration on sun protection with three different concentrations(2 5%, 5. 0% and 7. 5%.). Twenty-one normal healthy Korean-men, majority(2. 5%) of whom have skin type iv or v, were applied to their untanned back with above prepared nine different sunscreens and calculated individual sun protection factor (SPF) of these different sunscreens. The test results can be summarized as follows: 1. In the para-aminobenzoic acid, the mean SPF, of concentrations were 7. 33+2. 87, 7.35+2. 89 and 7. 37+2. 88 no significant difference. 2. In the benzophenone, the mean SPF of all of 2. 5M, ntrations was 3.43 t0. 85. 3 In the cinnamate, the mean SPF of all of 2. 5% 5. O%
