Premium
CHEMICAL PROTECTORS AGAINST SUNBURN
Author(s) -
FINDLAY G. H.,
NEL S. J.
Publication year - 1971
Publication title -
british journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.304
H-Index - 179
eISSN - 1365-2133
pISSN - 0007-0963
DOI - 10.1111/j.1365-2133.1971.tb14108.x
Subject(s) - sunburn , benzene , benzoic acid , chemistry , sunscreening agents , medicine , dermatology , organic chemistry , cancer , skin cancer
SUMMARY This study suggests a way to compare the protective action of chemical substances as optical filters against sunburn. For this purpose a photoprotective index is derived from the curves of optical density of the chemical substance in solution and erythemal effectiveness. The success of para‐amino‐benzoic acid depends on a maximal push‐pull force on the electron cloud across the benzene ring. Several factors in the vehicle alter these electronic configurations to the detriment of the photoprotective action. A list is drawn up of substances which are optically superior as sunburn filters.