Self-tanning compositions containing an aromatic sulfonate and methods thereof
AssigneeKao Corporation
InventorsJordan Cordeiro, Emily Meiser, Aki Shimada, Taisuke Aosaki
Life of this patent
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Abstract
A topical skincare composition that includes (A) a reducing sugar, (B) an aromatic sulfonate having a topological polar surface area (tPSA) of less than 100 Å2, and (C) a carrier. A method for adjusting color appearance (e.g., hue angle, lightness, saturation) of skin, which involves applying the topical skincare composition onto the skin is also specified. The topical skincare composition can provide a deep, rich, long lasting sunless tan with aesthetically pleasing red/bronze tone when applied onto the skin.
Claims13
A topical skincare composition, comprising:
- (A) about 0.1 to 30 wt. % of a reducing sugar relative to a total weight of the topical skincare composition;
- (B) an alkali metal aromatic sulfonate salt;
- (C) a carrier comprising an aromatic alcohol;
- and
- (D) an organic solvent comprising a polyol,
- wherein the alkali metal aromatic sulfonate salt (B) has a topological polar surface area (tPSA) of less than 100 Å2,
- a weight ratio of the alkali metal aromatic sulfonate salt (B) to the reducing sugar (A) (B):(A)) is 1:20 to 20:1, and
- a weight ratio of the carrier (C) to the organic solvent (D) ((C):(D)) is 1:20 to 1:2.
A collection of topical skincare products for retail sale, the collection comprising:
- (a) a first topical skincare composition that comprises:
- (A) about 0.1 to 30 wt. % of a reducing sugar relative to a total weight of the topical skincare composition;
- (B) an alkali metal aromatic sulfonate salt;
- (C) a carrier comprising an aromatic alcohol;
- and
- (D) an organic solvent comprising a polyol,
- wherein the alkali metal aromatic sulfonate salt (B) has a topological polar surface area (tPSA) of less than 100 Å2, and
- wherein a weight ratio of the alkali metal aromatic sulfonate salt (B) to the reducing sugar (A) ((B):(A)) is 1:20 to 20:1, and
- a weight ratio of the carrier (C) to the organic solvent (D) ((C):(D)) is 1:20 to 1:2
- (b) a second topical skincare composition that comprises:
- (A) about 0.1 to 30 wt. % of a reducing sugar relative to a total weight of the topical skincare composition;
- (B) an alkali metal aromatic sulfonate salt;
- and
- (C) a carrier,
- wherein the alkali metal aromatic sulfonate salt (B) has a topological polar surface area (tPSA) of less than 100 Å2, and
- wherein a weight ratio of the alkali metal aromatic sulfonate salt (B) to the reducing sugar (A) ((B):(A)) is 1:20 to 20:1, and
- wherein a content of the reducing sugar (A) present in the first topical skincare composition (a) is less than that of the reducing sugar (A) present in the second skincare composition (b), and wherein the contents are each relative to total weights of the first and second topical skincare compositions.
Dependencies are inferred from the claim text.