Abstract

The present invention relates to an oil-in-water emulsion comprising, in a physiologically acceptable medium: a) at least one continuous aqueous phase; b) at least one fatty phase dispersed in the said aqueous phase comprising at least one polar oil; c) at least one lipophilic organic UV screening agent; d) and optionally at least one insoluble inorganic UV screening agent and/or one insoluble organic UV screening agent; e) at least one (block A)-(block B) diblock copolymer in which: the block A comprises at least units derived from styrene; the block B comprises at least (a) units deriving from acrylic acid in the acid or salified form and (b) at least units deriving from a C<SUB>1</SUB>-C<SUB>4</SUB> alkyl acrylate. The present invention also relates to the use of at least one diblock copolymer as defined above in a fluid oil-in-water emulsion comprising a) at least one fatty phase comprising at least one polar oil, b) at least one lipophilic organic UV screening agent and optionally c) at least one insoluble inorganic UV screening agent and/or at least one insoluble organic UV screening agent, for the purpose of improving the cosmetic properties and/or of improving the stability of the said emulsion and/or for the purpose of increasing the sun protection factor (SPF) and/or of improving the persistence towards water of the photoprotective power.


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