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Cosmetic composition containing oil phase and naphthopyran photochromic dye, useful e.g. as make up, provides rapid and reversible color change on exposure to sunlight
Cosmetic composition containing oil phase and naphthopyran photochromic dye, useful e.g. as make up, provides rapid and reversible color change on exposure to sunlight
Cosmetic composition (A) comprises, in a suitable medium, at least one oil phase (OP) and at least one naphthopyran (B), soluble in OP. Cosmetic composition (A) comprises, in a suitable medium, at least one oil phase (OP) and at least one naphthopyran (B), of formulae (I) or (II), soluble in OP. R1 = hydrogen or a substituent; R5 and R6 = saturated or unsaturated cyclic aminoaryl groups, indolinoaryl groups, or a 1-30, best 3-12, C hydrocarbyl group (Hy), linear, branched, cyclic, saturated or unsaturated, optionally containing 1-5 heteroatoms (nitrogen, oxygen, sulfur, silicon or phosphorus), particularly phenyl substituted by CONR2R3, NR2R3 or OR4; R7, R1' and R2' = hydrogen or substituents; R2 and R3 = Hy or together they complete a heterocycle containing 3-10, preferably 4-6 C atoms and optionally 1-5 additional heteroatoms, and optionally substituted by Hy; and R4 = Hy, optionally (per)halogenated, preferably by fluoro, bromo and/or chloro. The full definitions are given in the DEFINITIONS (Full Definitions) Field.
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