Personal care composition
AssigneeConopco, Inc.
InventorsPunam Bandyopadhyay, Vishi Bansal, Vijay Ramchandra Gadgil, Rezwan Shariff, Ravi Kant Shukla
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Abstract
The present invention relates to a personal care composition for topical application having a skin lightening application. It is an object of the present invention to provide for a personal care composition that comprises fractions obtained from natural sources that gives enhanced skin lightening as compared to known fractions from natural sources.
Claims6
A skin lightening composition comprising
- a. an extract of Desmodium gangeticum,
- wherein the extract comprises 65-80% w/w polyphenols and 50-65% w/w flavonoids, and the extract has a solubility in water in the range of 1 to 40% w/w of the extract at 25° C.;
- and
- b. a cosmetically acceptable base selected from the group consisting of a cream, a lotion, a gel and an emulsion.
A process for preparing an extract of Desmodium gangeticum, wherein the extract comprises 65-80% w/w polyphenols and 50-65% w/w flavonoids, and the extract has a solubility in water in the range of 1 to 40% w/w of the extract at 25° C., the process comprising the steps of:
- (a) heating the Desmodium gangeticum in water to reflux for 5 to 8 hours;
- (b) separating any insoluble matter to prepare an aqueous fraction;
- and
- (c) subjecting the aqueous fraction to a step of fractionating substantially water-insoluble constituents by one of the following methods:
- (i) separation using a polystyrene-based gel;
- (ii) separation by precipitation using mid-polar solvents selected from the group consisting of ethyl acetate, acetone, chloroform, dichloromethane, hexanes, toluene, xylene, diethyl ether, butanol, isobutyl methyl ketone and mixtures thereof;
- or
- (iii) separation using a chemical step involving acid hydrolysis to separate out the water-insoluble constituents.
A cosmetic method for lightening skin comprising the step of topically applying an extract of Desmodium gangeticum wherein the extract comprises 65-80% w/w polyphenols and 50-65% w/w flavonoids, and the extract has a solubility in water in the range of 1 to 40% w/w of the extract at 25° C.
Dependencies are inferred from the claim text.