EMULSION PHOTOSTABLE FILTERING COSMETIC COMPOSITION CONTAINING A WATER SOLUBLE WIDE-BAND WATER FILTER AND AT LEAST ONE UV-A LIPOSOLUBLE FILTER AND USE THEREOF FOR PROTECTING SKIN FROM ULTRAVIOLET RADIATION

摘要

The invention relates to a photostable filter emulsion containing, in combination, in the aqueous phase, a broad-absorption photostable filter constituted by benzene-1,4- [di (3-methylidene-10-camphosulphonic acid) partially or completely neutralized, and in the oily phase, a photostable UV-A filtering system comprising at least one of the following compounds: N- (2-ethylhexyl) 3 - [(3'-methoxy-4'-) n-butoxy) benzylidene] 10-camphosulfonamide (compound 2), 4- (1,1-dimethylethyl) -4'-methoxydibenzoylmethane (compound 3) and 4-isopropyl dibenzoylmethane (compound 4), the latter two compounds 3 and 4 being photochemically stabilized by at least one liposoluble lambdam ax filter less than 330 nm selected from the following benzylidene camphor derivatives: benzylidene camphor (compound 5), p-methylbenzylidene camphor (compound 6), N- (2-ethylhexyl) 4 - (3'-methylidene camphor) benzene sulfonamide (compound 7) and 3-methoxy-4-n-buto xybenzylidene camphor (compound 8). / P P This composition is intended to protect the skin from UV rays of wavelengths between 280 and 380 nm. / P