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US 2004/0166077 A1Published application
Process for treating keratin materials with aromatic active principles
AssigneeL'oreal
InventorsLeila Toumi, Anne-Laure Bernard, Henri Samain, Luc Nicolas Morgantini
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Abstract
The present invention relates to a process for treating keratin materials, and especially human keratin materials such as the hair, the integuments and the skin, comprising the controlled release of an aromatic cosmetic active principle from synthetic polymer particles containing aryl groups, with a glass transition temperature (Tg) of greater than or equal to 45° C., and also to a kit for performing such a process.
Claims25
A process for treating keratin material, comprising the simultaneous or consecutive application to keratin material of two compositions (a) and (b):
- composition (a) comprising particles comprising:
- (i) at least one cosmetic active principle comprising one or more aromatic, carbocyclic or heterocyclic, monocyclic or fused polycyclic groups, with a molecular weight of less than or equal to 1000, and
- (ii) at least one synthetic polymer containing aryl groups with a glass transition temperature (Tg) of greater than or equal to 45° C. and comprising covalent bonds capable of being cleaved by a reagent R present in composition (b),
- composition (b) comprising at least one reagent R capable of cleaving at least one covalent bond of the synthetic polymer containing aryl groups in the particles of composition (a),
- the chemical cleavage of at least one covalent bond of the synthetic polymer containing aryl groups in the particles of composition (a) by reagent R resulting in a release of the aromatic cosmetic active principle.
2 more elements
Dependencies are inferred from the claim text.