METHOD FOR RELAXING HAIR

• US 20070041921A1
• Filed: 08/16/2006
• Published: 02/22/2007
• Est. Priority Date: 08/18/2005
• Status: Abandoned Application

• Current Assignee: Conopco, Inc. (Unilever PLC)
• Original Assignee: Conopco, Inc. (Unilever PLC)
• Inventors: NEILL, Paul, FOWLER, Margie, MEDEIROS (nee BISPO), Monica, EVANS, Trefor
• Application Number:
  US11/464,902
• Publication Number:
  US 20070041921A1
• Time in Patent Office: Days
• US Class Current: 424/70.200
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61K 8/43 Guanidines
• CPC Class Codes: A61Q 5/04 Preparations for permanent waving or straightening the hair

Abstract

A method of relaxing naturally curly hair that comprises: A) carrying out a hair treatment session that comprises the steps of: i) applying to the hair, an alkaline hair relaxer comprising an active hydroxide, ii) allowing the relaxer to remain on the hair for a total period of less than about 10 minutes; iii) removing the relaxer from the hair; and B) repeating the treatment session described in part (A) to attain a desired degree of hair relaxation, with the interval between individual treatment sessions ranging from about 3 to about 20 days.

Claims

1. A method of relaxing naturally curly hair that comprises:

A) carrying out a hair treatment session that comprises the steps of;

i) applying to the hair, an alkaline hair relaxer comprising an active hydroxide,

ii) allowing the relaxer to remain on the hair for a total period of less than about 10 minutes;

iii) removing the relaxer from the hair; and

B) repeating the treatment session described in part (A) to attain a desired degree of hair relaxation, with the interval between individual treatment sessions ranging from about 3 to about 20 days.

2. A method as described in claim 1, wherein after a desired degree of relaxation is attained, the treatment session described in part (A) is repeated, as needed, to maintain ease of styling and a relaxed hair appearance.

3. A method as described in claim 1, wherein the treatment session described in part (A) is repeated to maintain the desired degree of hair relaxation, with the interval between individual treatment sessions ranging from about 1 to about 2 weeks, after the desired degree of relaxation has been attained.

4. A method as described in claim 1 wherein following step (A)(iii), the hair is further treated with a neutralizing agent.

5. A method as described in claim 1 wherein following step (A)(iii), the hair is further treated with a conditioning agent.

6. A method as described in claim 1 wherein the relaxer is allowed to remain on the hair for a period of up to about 5 minutes.

7. A method as described in claim 1 wherein the interval between individual treatment sessions ranges from about 5 to about 15 days.

8. A method as described in claim 1 wherein the treatment session is repeated a minimum of 3 times.

9. A method as described in claim 1 wherein the relaxer is a lye-type relaxer.

10. A method as described in claim 1 wherein the relaxer is a no-lye type relaxer.

11. A method as described in claim 1 wherein the relaxer comprises at least one active hydroxide selected from the group consisting of sodium hydroxide, potassium hydroxide, lithium hydroxide and guanidine hydroxide.

12. A method as described in claim 1 wherein the relaxer comprises sodium hydroxide.

13. A method as described in claim 1 wherein the relaxer comprises

a) at least one reactive hydroxide,

b) at least one oleagenous material,

c) at least one C₁₂-C₂₂ fatty alcohol and/or a glycol ether thereof, and

d) water.

14. A hair treatment product that comprises, in a single kit:

A) a relaxer composition that provides a source of active hydroxide,

B) optionally, an activator composition,

C) optionally, a neutralizing composition,

D) optionally, a conditioning composition, and

E) instructions teaching the use of the kit components in such a manner that the hair to be straightened is subjected to multiple treatments of reactive hydroxide, for periods lasting less than about 10 minutes, with the interval between treatments ranging from about 3 to about 20 days, until a desired degree of hair relaxation is attained.

15. A hair treatment product as described in claim 14, wherein the instructions teach that the interval between treatments ranges from about 5 to about 15 days, until a desired degree of hair relaxation is attained.

16. A hair treatment product as described in claim 14, wherein active hydroxide is generated by the reaction of the relaxer composition with an activator.

17. A hair treatment product as described in claim 14 wherein the relaxer composition comprises at least one reactive hydroxide in an aqueous conditioner base.

18. A hair treatment product as described in claim 17 wherein the aqueous conditioner base comprises at least one cationic conditioning agent and at least one fatty material.