Use of bismuth oxycarbonate particles for ultraviolet radiation filtration

Abstract

Use of bismuth oxycarbonate particles for ultraviolet radiation filtration. The present invention relates to the use of bismuth oxycarbonate particles of the empirical formula (BiO)2-x(CO3), in which -0.4 < x < 0.6, for the filtration of ultraviolet radiation, the largest average dimension of said particles being less than 400 nm. It also relates to a composition comprising: i) bismuth oxycarbonate particles as defined above; ii) at least one aqueous phase and / or at least one oily phase; and iii) at least one compound selected from: a) UV filters separate from bismuth oxycarbonate particles i), b) colorants, c) cosmetic actives for the care of keratinous materials, d) surfactants, e) thickeners, and mixtures thereof.Finally, it relates to a process for filtering UV radiation, comprising at least the application to keratinous materials of a cosmetic composition comprising bismuth oxycarbonate particles as defined above. Figure for the abstract: None.