Premium
A study of chemical light screening agents
Author(s) -
MACLEOD T.M.,
FRAINBELL W.
Publication year - 1975
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.1365-2133.1975.tb03103.x
Subject(s) - action spectrum , wavelength , visible spectrum , ultraviolet , titanium dioxide , broad spectrum , materials science , optoelectronics , chemistry , photochemistry , combinatorial chemistry , metallurgy
SUMMARY In a group of 104 non‐photosensitive subjects and seventy‐eight suffering from a variety of photodermatoses, the most effective protective preparation against irradiation by short UV sunburn wavelengths (<320 nm) was found to be a mixture of 5% para‐aminobenzoic acid and 2.5% of the ester amyl dimethylaminobenzoate in 70% ethanol with para‐aminobenzoic acid being usually more effective than the ester, and mexenone the least effective individually. The protective capacity was found to be reduced by showering but not by exercise. The addition of glycerol to the formulations did not affect their protective capacity although the addition of propylene glycol did increase the protection obtained.