Oxidative treatment of hair with reduced hair damage

• US 7,179,302 B2
• Filed: 09/22/2003
• Issued: 02/20/2007
• Est. Priority Date: 03/20/2001
• Status: Expired due to Term

• Current Assignee: Wella Operations US LLC
• Original Assignee: The Procter & Gamble Company
• Inventors: Park, John Scott, Olshavsky, Michael Andrew, Boswell, Henry Drummond, Marsh, Jennifer Mary
• Primary Examiner(s): ELHILO, EISA B
• Application Number:
  US10/667,878
• Publication Number:
  US 20040105830A1
• Time in Patent Office: 1,247 Days
• Field of Search: 840/5, 840/6, 843/1, 850/1, 854/2, 424/70.2, 132/202, 132/208
• US Class Current: 8/405
• CPC Class Codes: A61K 2800/51 Chelating agents
• CPC Class Codes: A61K 8/44 Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• CPC Class Codes: A61Q 5/04 Preparations for permanent waving or straightening the hair
• CPC Class Codes: A61Q 5/08 Preparations for bleaching the hair
• CPC Class Codes: A61Q 5/10 Preparations for permanently dyeing the hair

Abstract

The present invention relates to hair care compositions comprising chelants and methods for reducing oxidative hair damage. The compositions contribute to reducing the oxidative damage sustained by keratinous fibers such as human hair during bleaching, dyeing, perming or other oxidative treatments. The compositions according to the present invention also provide excellent color evenness and color fastness.

Claims

1. A composition suitable for treating hair comprising:

a) an oxidizing agent; and

b) a chelant (L) having a

2. A composition according to claim 1, wherein said chelant (L) has a Hydrogen Peroxide Decomposition Ratio (% Loss) of less than about 10% as measured by the Hydrogen Peroxide Decomposition Ratio Measurement Protocol.

3. A composition according to claim 1, wherein said chelant (L) is capable of fonning a hexadendate complex with Cu²⁺.

4. A composition according to claim 1, wherein said oxidizing agent is present at a level of from about 0.1% to about 40% by weight of the composition and is selected from water-soluble oxidizing agents and mixtures thereof.

5. A composition according to claim 1, further comprising at least one oxidative hair dye precursor.

6. A composition according to claim 1, wherein said composition is in the form of an oil-in-water emulsion.

7. A composition according to claim 1, wherein said composition is in the form of a thickened aqueous solution.

8. A composition according to claim 1, wherein said composition has a pH from about 8 to about 12.

14. A kit for dyeing hair comprising a first and a second compositions packaged in different containers, wherein said first composition comprises an oxidizing agent and said second composition comprises an oxidative dye precursor, wherein the resulting mixture of said first and second compositions is a composition according to claim 5.

15. A method of dyeing human hair, said method comprising the steps of:

i) mixing the first and second composition of a kit according to claim 14;

ii) applying the mixture obtained after step i) to hair;

iii) massaging said mixture into hair;

iv) retaining said mixture on the hair for an amount of time sufficient for mixture to dye the hair;

iv) rinsing off said composition with water.

9. A method of treating hair, said method comprising the steps of:

i) applying a first composition comprising an oxidizing agent;

ii) applying a second composition comprising a chelant (L) having a

10. A method of treating hair, said method comprising the steps of:

i) applying to the hair a first composition comprising a chelant (L) having a

11. A method of treating hair according to claim 10, wherein step i) takes place immediately before step ii).

12. A method of treating hair according to claim 10, wherein said first composition is not rinsed off the hair before said second composition is applied to the hair.

13. A kit for treating hair comprising:

i) a first separately packaged composition comprising a chelant (L) having a