Patent ID: 7959903

Claim:
A photoprotective composition for protecting the skin and/or the hair against UV radiation, comprising: (1) as liquid phase, an oil-in-water emulsion, emulsified with at least one dimeric surfactant comprising two surfactant units, which are identical or different, each comprising a hydrophilic head and a hydrophobic tail and connected to each other, via the hydrophilic heads, by means of a spacer group, said dimeric surfactant being an anionic dimeric surfactant of formula (I): in which R 1 and R 3 are identical and each represent a linear C 8-16 alkyl group, R 2 represents a C 2-8 alkylene group, and X and Y each represent a group (C 2 H 4 O) x —RF with x=10-15 and RF=—SO 3 M, in which M represents an alkali metal ion, the concentration of the dimeric surfactant(s) being between 0.01% and 4% by weight relative to the total weight of the photoprotective composition; (2) a photoprotective system which screens out UV rays, comprising at least one mineral nanopigment based on metal oxide, the concentration of the nanopigment(s) being between 0.5% and 10% by weight relative to the total weight of the photoprotective composition; and (3) at least one nonionic associative polymer comprising at least one C 8-40 fatty chain, which is a hydroxyethylcellulose modified with a group having at least one fatty chain or a polyether-polyurethane having hydrophilic blocks and at least one fatty chain, the concentration of the associative polymer(s) being between 0.01% and 10% by weight relative to the total weight of the photoprotective composition.