# US 8,771,377 B2 · Hair care composition comprising pyrithione and a purple, pink or red colouring component

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- Number: US 8,771,377 B2
- Document ID: US8771377B2
- Status: Granted
- Kind: B2
- Application number: 14/003,462
- Filed: 2012-02-07
- Published: 2014-01-16
- Granted: 2014-07-08
- Earliest claimed: 2011-03-10
- Assignees: Conopco, Inc.
- Applicants: Qunhua Cao; Amit Jayaswal; Qing Yang; Shuhong Yuan
- Inventors: Qunhua Cao; Amit Jayaswal; Qing Yang; Shuhong Yuan
- Web page: https://patentgrep.com/patent/US8771377B2

## CPC

- A61K 8/26: Aluminium; Compounds thereof
- A61K 8/19: containing inorganic ingredients
- A61K 8/22: Peroxides; Oxygen; Ozone
- A61K 8/27: Zinc; Compounds thereof
- A61K 8/466: {containing sulfonic acid derivatives; Salts}
- A61K 8/4933: {having sulfur as an exocyclic substituent, e.g. pyridinethione}
- A61Q 5/006: {Antidandruff preparations}
- A61Q 5/02: Preparations for cleaning the hair
- A61K 2800/436: Interference pigments, e.g. Iridescent, Pearlescent
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

Hair care composition comprising a metal pyrithione, characterized by from 0.00001 to 0.005% wt. a purple or pink or red coloring component.

## Claims

### Claim 1

Hair care composition comprising a metal pyrithione, characterized by from 0.00001 to 0.005% wt. a purple or pink or red colouring component selected from the group consisting of Acid Red 1, Acid Red 14, Acid Red 18, Acid Red 26, Acid Red 27, Acid Red 33, Acid Red 41, Acid Red 50, Acid Red 52, Acid Red 155 and Acid Red 163.

### Claim 2 (depends on 1)

Composition according to claim 1 wherein the metal is selected from magnesium, barium, bismuth, strontium, copper, zinc, cadmium, zirconium and mixtures thereof.

### Claim 3 (depends on 1)

Composition according to claim 1 wherein the metal pyrithione is zinc pyrithione.

### Claim 4 (depends on 1)

Composition according to claim 1 comprising from 0.01 to 3% wt. metal pyrithione.

### Claim 5 (depends on 1)

Composition according to claim 1 comprising a pearliser system characterized by a bismuth oxychloride component and a mica component.

### Claim 6 (depends on 1)

Composition according to claim 1 comprising from 0.01 to 5% wt. bismuth oxychloride component.

### Claim 7 (depends on 1)

Composition according to claim 1 comprising from 0.01 to 5% wt. mica component.

### Claim 8 (depends on 1)

Composition according to claim 1 comprising from 2 to 50% cleansing surfactant.

### Claim 9 (depends on 8)

Composition according to claim 8 wherein the cleansing surfactant comprises a surfactant selected from anionic surfactants, amphoteric surfactants and nonionic surfactant and mixtures thereof.

### Claim 10 (depends on 1)

Composition according to claim 1 wherein the colouring component is present in an amount of from 0.00005 to 0.0003 wt %.