Cosmetic composition comprising two optical brighteners, method, use, and kit-of-parts thereof

Patent metadata

Field	Value
Publication number	US-11141367-B2
Application number	US-201715787952-A
Country	US
Kind code	B2
Filing date	Oct 19, 2017
Priority date	Oct 19, 2016
Publication date	Oct 12, 2021
Grant date	Oct 12, 2021

Abstract

A cosmetic composition is disclosed comprising a synthetic optical brightener and a naturally-derived optical brightener. Both brightener classes absorb and emit light at different wavelengths and possess in combination a superior effect. The combination enhances color brilliance on keratin fibers under daylight and artificial light conditions.

First claim

The invention claimed is:

1. A cosmetic composition for keratin fibers, the cosmetic composition comprising:
two optical brighteners selected from
a) first optical brightener is

and/or its salts having a light absorption maximum below 400 nm and a light emission maximum of 400 nm to 500 nm, and
b) second optical brightener is hydrolyzed Verbascum thapsus flower and/or Verbascum thapsus extract having a light absorption maximum of 400 nm to 450 nm and a light emission maximum of 450 nm to 700 nm,
wherein
a weight ratio of the first optical brightener to the second optical brightener is in a range from 1 to 10,000, calculated as dry matter to a total of the cosmetic composition.

2. The cosmetic composition of claim 1 , further comprising cationic surfactants, anionic surfactants, zwitterionic surfactants, amphoteric surfactants, non-ionic surfactants, and/or a mixture of more than one surfactant.

3. The cosmetic composition of claim 1 , further comprising a weight ratio of total anionic surfactant to total amphoteric surfactant in a range from 2.55 to 155.

4. The cosmetic composition of claim 1 , wherein the cosmetic composition has a pH range of 3.0 to 8.0.

5. The cosmetic composition of claim 1 , further comprising linear silicones, cyclic silicones, and/or siliconols.

6. The cosmetic composition of claim 1 , further comprising cationic conditioning polymers.

7. The cosmetic composition of claim 1 , further comprising:
a. a compound of a general structure

wherein R 9 is a linear or branched alkyl chain with a total carbon number of C 3 to C 12 .

8. The cosmetic composition of claim 1 , further comprising aminosilicone.

9. A method of conferring shine, luster, and color brilliance to keratin fibers, the method comprising:
a) applying the cosmetic composition of claim 1 to keratin fibers during or after washing,
b) massaging the cosmetic composition into the keratin fibers for a time period of 10 seconds to 600 seconds,
c) optionally rinsing the cosmetic composition off the keratin fibers,
d) optionally drying the keratin fibers.

10. A kit-of-parts comprising:
the cosmetic composition of claim 1 ;
a conditioning composition for keratin fibers; and
a blow dryer.

11. The cosmetic composition of claim 4 , wherein the pH range of the cosmetic composition is 3.5 to 6.5.

12. The cosmetic composition of claim 11 , wherein the pH range of the cosmetic composition is 4.5 to 5.5.

13. The cosmetic composition of claim 4 , wherein the weight ratio of the first optical brightener to the second optical brightener ranges from 1 to 100, calculated as dry matter to a total of the cosmetic composition.

14. The cosmetic composition of claim 12 , wherein the cosmetic composition is in the form of a styling composition.

Assignees

• Kao Germany Gmbh

Inventors

• Lipinski Normen
• Picker Andreas

Classifications

• A61K8/466 Primary

  containing sulfonic acid derivatives; Salts · CPC title

• A61K8/9789

  Magnoliopsida [dicotyledons] · CPC title

• A61K8/345

  containing more than one hydroxy group · CPC title

• A61K8/97

  from algae, fungi, lichens or plants; from derivatives thereof · CPC title

• A61Q5/12

  Preparations containing hair conditioners · CPC title