초록 ▼

Topically applicable UVA photoprotective cosmetic/dermatological compositions comprise an effective photoprotecting amount of at least one UVA screening agent substituted by at least one optionally neutralized sulfo functional group, and an effective UVA photoprotecting-enhancing amount of at least

Topically applicable UVA photoprotective cosmetic/dermatological compositions comprise an effective photoprotecting amount of at least one UVA screening agent substituted by at least one optionally neutralized sulfo functional group, and an effective UVA photoprotecting-enhancing amount of at least one otherwise non-UVA photoprotecting iron chelating agent, thereby imparting a synergistic protection factor (PF) effect thereto, in a cosmetically/dermatologically acceptable topical vehicle, carrier or diluent therefor.

대표청구항 ▼

[ What is claimed is:] [1.] A topically applicable UVA photoprotective cosmetic/dermatological composition, comprising:an effective photoprotecting amount of at least one UVA benzylidene camphor compound selected from the group consisting of:(i) a compound of formula (II) [ STR 9 ] wherein R.sub.2 i

[ What is claimed is:] [1.] A topically applicable UVA photoprotective cosmetic/dermatological composition, comprising:an effective photoprotecting amount of at least one UVA benzylidene camphor compound selected from the group consisting of:(i) a compound of formula (II) [ STR 9 ] wherein R.sub.2 is hydrogen or -SO.sub.3 H; R.sub.3, R.sub.4, R.sub.5 and R.sub.6, which may be identical or different, are each hydroxy, linear or branched chain alkyl having from 1-4 carbon atoms, linear or branched chain alkenyl having from 2-4 carbon atoms, linear or branched chain alkoxy having from 1-4 carbon atoms, linear or branched chain alkenyloxy having from 2-4 carbon atoms or halo, with the proviso that only one radical of the group R.sub.3 -R.sub.6 may be -SO.sub.3 H and that at least one of the radicals R.sub.3 -R.sub.6 denote the -SO.sub.3 H radical when R.sub.2 is hydrogen;(ii) a compound of formula (III): [ STR 10 ] wherein R.sub.11 is hydrogen, a linear or branched chain alkyl or alkoxy radical having from 1-6 carbon atoms, or -SO.sub.3 H; R.sub.12 is hydrogen or a linear or branched chainalkyl or alkoxy group having from 1-6 carbon atoms; R.sub.13 is hydrogen or -SO.sub.3 H, with the proviso that at least one of the radicals R.sub.11 and R.sub.13 is a -SO.sub.3 H radical; and X is oxygen or sulfur or -NR-, wherein R is hydrogen or a linear or branched chain alkyl having from 1-6 carbon atoms; and(iii) a compound of formula (b): [ STR 11 ] wherein R.sub.9 is a divalent radical -(CH.sub.2).sub.m - or -CH.sub.2 -CHOH-CH.sub.2 -, wherein m is an integer ranging from 1-10 (1.ltoreq.m.ltoreq.10); R.sub.10 is hydrogen, alkoxy having from 1-4 carbon atoms, or a divalent radical -O- bonded to radical R.sub.9 when the latter is also divalent; and Y and Y' are each hydrogen or -SO.sub.3 H, at least one of Y or Y' being other than hydrogen, and an effective UVA photoprotecting-enhancing amount of at least one otherwise non-UVA photoprotecting iron chelating agent having an association constant with ferrous or ferric ions greater than 10.sup.2 and selected from the group consisting of dibenzyldithiocarbamate ethylenediaminetetramethylenephosphonic acid, ethylenediaminetetraacetic acid, citric acid, tartaric acid, phytic acid salts thereof and in a cosmetically/dermatologically acceptable topical vehicle, carrier or diluent therefor.