Granted Patent B2

US 12,564,546 · App. 17/997,134 · Granted Mar 3, 2026

Inventors: Jordan Cordeiro (Erlanger, KY); Emily Meiser (Cincinnati, OH); Aki Shimada (Tokyo, JP); Taisuke Aosaki (Tokyo, JP)

Assignee: Kao Corporation

A61K8/466A61K8/60A61Q19/04

Abstract

Claims (41)

1 . 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 Å 2 ,

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.

2 . The topical skincare composition of claim 1 , wherein the alkali metal aromatic sulfonate salt (B) is an optionally substituted phenyl sulfonate, an optionally substituted naphthyl sulfonate, or both.

3 . The topical skincare composition of claim 1 , wherein the alkali metal aromatic sulfonate salt (B) is sodium 2-naphthalenesulfonate.

4 . The topical skincare composition of claim 1 , wherein the alkali metal aromatic sulfonate salt (B) is sodium cumenesulfonate.

5 . The topical skincare composition of claim 1 , wherein the reducing sugar (A) is dihydroxyacetone, erythrulose, or both.

6 . The topical skincare composition of claim 1 , wherein the aromatic alcohol comprises benzyl alcohol.

7 . The topical skincare composition of claim 1 , wherein a weight ratio of the alkali metal aromatic sulfonate salt (B) to the carrier (C) ((B):(C)) is 1:4 to 4:1.

8 . The topical skincare composition of claim 1 , which is substantially free of a cationic copolymer.

9 . A method of adjusting a color of the skin of a subject, the method comprising:

topically applying the topical skincare composition of claim 1 onto the skin of the subject,

wherein the topical application reduces or increases a hue angle h° of the color by at least 0.5° compared to that prior to the topical application.

10 . A method of adjusting a color of the skin of a subject, the method comprising:

topically applying the topical skincare composition of claim 1 onto the skin of the subject,

wherein the topical application reduces a lightness L* of the color by at least 10% and reduces or increases a hue angle h° of the color by at least 0.5°, each compared to those prior to the topical application.

11 . A method of adjusting a color saturation of the skin of a subject, the method comprising:

topically applying the topical skincare composition of claim 1 onto the skin of the subject,

wherein the topical application increases a saturation C* of the color by at least 10% compared to that prior to the topical application.

12 . 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 Å 2 , 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 Å 2 , 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.

13 . The collection of claim 12 , wherein the first topical skincare composition (a) and the second topical skincare composition (b) are separately packaged.

Assignments (1)

Continuity (2)

References Cited (23)