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US 9,539,189 B2Granted
Photoprotective personal care composition
AssigneeConopco, Inc.
InventorsPraful Gulab Rao Lahorkar, Ashish Anant Vaidya, Mohan Vijaykumar Chavan, Vijay Ramchandra Gadgil
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Abstract
The invention relates to a photoprotective personal care composition that provides enhanced stability of the UV-A sunscreen present therein. The present inventors have found that it is possible to enhance stability of the UV-A sunscreen of the dibenzoylmethane group by including certain compounds of the chalcone group.
Claims10
A photostable sunscreen composition comprising
- (i) 0.1 to 10% by weight of dibenzoylmethane or its derivative;
- (ii) 0.1 to 10% by weight of a chalcone compound of the formula:
- where R1 is selected from
- a glucose unit,
- or an isoprene unit;
- R2 is selected from a H atom or a glucose unit;
- R3 and R4 are each independently selected from a H atom or an aryl group;
- and
- (iii) a cosmetically acceptable base.
6 more elements
A method of stabilizing a dibenzoylmethane or its derivative by including a chalcone compound of the formula:
- where R1 is selected from
- a glucose unit,
- or an isoprene unit;
- R2 is selected from a H atom or a glucose unit;
- R3 and R4 are each independently selected from a H atom or an aryl group;
- in a sunscreen composition comprising the dibenzoylmethane or its derivative.
3 more elements
Dependencies are inferred from the claim text.