Hair straightening method involving reducing sugars

Patent metadata

Field	Value
Publication number	US-9415000-B2
Application number	US-201414508310-A
Country	US
Kind code	B2
Filing date	Oct 7, 2014
Priority date	Oct 7, 2013
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

A hair straightening and/or hair relaxing method comprising: applying a hair care composition to hair, wherein the composition comprises a sugar, a buffering agent and a cosmetically acceptable carrier; and wherein, where the composition is heated to a temperature of at least 100° C., the composition comprises from about 6% to about 20% reducing sugar; hair drying; providing a hair straightening appliance at a temperature of from about 100° C. to about 280° C. and mechanically straightening the hair with the appliance.

First claim

What is claimed is:

1. A hair straightening method comprising:
(a) applying a hair care composition to hair, wherein the hair care composition comprises a reducing sugar from about 6% to about 20% by weight of the hair care composition, wherein the reducing sugar is selected from the group consisting of arabinose, ribose, and mixtures thereof; a buffering agent selected from the group consisting of glycine/sodium hydroxide, sodium carbonate/sodium hydrogen carbonate, sodium tetraborate/sodium hydroxide, sodium bicarbonate/sodium hydroxide, ammonium chloride/ammonia, and mixtures thereof and a cosmetically acceptable carrier;
(b) drying the hair;
(c) mechanically straightening the hair with a hair straightening appliance at a temperature of from about 100° C. to about 280° C.;
wherein the hair care composition is free of formaldehyde, methylene glycol, a ceramide compound, an alpha-hydroxy acid, thioglycolate, a thiolactate compound, a bisulfate compound, clay, a reducing agent, 1,3,5-trioxane, paraformaldehyde, a quaternary ammonium compound and a surfactant;
wherein the composition has a pH of from about pH 6 to about pH 10; wherein the method does not comprise a rinsing step between step (a) and step (c); and wherein the method does not use any coating material selected from a film coating material and sheet coating material.

2. The method of claim 1 , wherein said reducing sugar is from about 12% to about 18% by weight of the hair care composition.

3. The method of claim 1 , wherein the hair care composition comprises an antioxidant.

4. The method of claim 1 , wherein the hair care composition comprises a conditioning agent, and wherein the conditioning agent is selected from the group consisting of epoxyaminosilane copolymers, polysiloxane/polyurea block copolymers, and mixtures thereof.

5. The method of claim 1 , wherein the hair care composition has a pH of from about pH 6.5 to about pH 9.75.

6. The method of claim 1 , wherein the hair care composition has a pH of from about pH 7.0 to about pH 9.5.

7. The method of claim 1 , wherein the hair care composition has a pH of from about pH 8.0 to about pH 9.0.

Assignees

• Procter & Gamble

Inventors

• Washington Randy
• Flohr Andreas
• Davis Stephanie L

Classifications

• A61K8/86

  Polyethers · CPC title

• A61K8/81

  obtained by reactions involving only carbon-to-carbon unsaturated bonds · CPC title

• A61K8/585

  Organosilicon compounds · CPC title

• A61K8/25

  Silicon; Compounds thereof · CPC title

• A61K2800/88

  Two- or multipart kits · CPC title