TY  - JOUR
T1  - COmment on sunscreen studies by langner and kligman
AU  - Bergstresser PR
Y1  - 1974/01/01
N1  - 10.1001/archderm.1974.01630010068019
JO  - Archives of Dermatology
SP  - 96
EP  - 96
VL  - 109
IS  - 1
N2  - To the Editor.— 
    As a sun enthusiast in Florida, I have used several 4-oz bottles of aminobenzoic acid 5% (Pre-Sun) during the last year. I recently reviewed the study of Langner and Kligman, which appeared in the Archives (105:851,1972). The study dealt with the protection afforded by aminobenzoic acid under a variety of clinical conditions. This review prompted me to calculate total amounts needed to provide the protection they observed. They stated the following: When volunteers applied aminobenzoic acid solutions to the entire trunk, as if in preparation for sunbathing, they were found to use quite different amounts, generally between 30μl to 50μl/sq cm. Extrapolating to the entire body surface, it becomes apparent that extraordinary amounts are required. One must apply 1 liter of solution at 50μl/sq cm to cover a surface area of 2 meters. Eight bottles at 4 oz each are sufficient.Incredulous, I applied 50μl and 30μl
SN  - 0003-987X
M3  - doi: 10.1001/archderm.1974.01630010068019
UR  - http://dx.doi.org/10.1001/archderm.1974.01630010068019
ER  -