Photoprotective composition comprising a glycine betaine derivative
AssigneeSurfactgreen
InventorsFrancis Galle, Freddy Pessel, Xavier Roussel
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Abstract
The present invention relates to a photoprotective composition comprising, in a physiologically acceptable medium, at least one photoprotective compound and a surfactant comprising at least one ester derivative or amide derivative of glycine betaine. It also relates to the cosmetic use of this photoprotective composition for protecting the skin against certain effects of UVA radiation, and also to this photoprotective composition for use thereof in the protection of the skin against erythema caused by UVB radiation. Finally, it relates to the use of the abovementioned surfactant for increasing the sand resistance of a photoprotective composition.
Claims10
A photoprotective composition which is a leave-on composition comprising, in a physiologically acceptable medium, at least one photoprotective compound and a surfactant comprising at least one glycine betaine derivative, it being understood that said photoprotective composition does not contain optionally cationized alkylpolyglycoside, wherein the surfactant includes the following constituents:
- (a) at least one glycine betaine ester salt of formula (1):
- [(CH3)3N+—CH2—COO—R]nXn-,
- (b) at least one fatty alcohol of formula R—OH,
- (c) an organic or inorganic acid of formula HX, and
- (d) a glycine betaine salt of formula [(CH3)3N+—CH2—COOH]nXn-,
- where R is a saturated or unsaturated, linear or branched, alkyl group comprising from 8 to 24 carbon atoms, X is an organic or inorganic anion and n has the value 1 or 2.
A method for increasing the resistance to sand of a photoprotective composition comprising adding thereto at least one surfactant comprising at least one glycine betaine derivative,
- wherein the surfactant includes the following constituents:
- (a) at least one glycine betaine ester salt of formula (1):
- [(CH3)3N+—CH2—COO—R]nXn-,
- (b) at least one fatty alcohol of formula R—OH,
- (c) an organic or inorganic acid of formula HX, and
- (d) a glycine betaine salt of formula [(CH3)3N+—CH2—COOH]nXn-,
- where R is a saturated or unsaturated, linear or branched, alkyl group comprising from 8 to 24 carbon atoms, X is an organic or inorganic anion and n has the value 1 or 2.
Dependencies are inferred from the claim text.