Shaping keratin fibres using an active agent comprising a functional group selected from the group consisting of: -C(=O)-, -C(=O)-H, and -C(=O)-O-

Patent metadata

Field	Value
Publication number	US-11096879-B2
Application number	US-201414576903-A
Country	US
Kind code	B2
Filing date	Dec 19, 2014
Priority date	Dec 19, 2013
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A method for shaping keratin fibres comprising: providing a crosslinking composition, wherein the crosslinking composition comprises: an active agent, wherein the active agent comprises a functional group selected from the group consisting of: —C(═O)—, —C(═O)—H, and —C(═O)—O—; and wherein the active agent is not an acid; and wherein the active agent has a molecular weight of 500 g/mol or less; a photocatalyst; a cosmetically acceptable carrier; and applying the crosslinking composition to keratin fibres, mechanically shaping the keratin fibres with an appliance or implement, and exposing the composition to electromagnetic radiation having a wavelength of from about 300 nm to about 750 nm. Also a related composition, use, kit and process.

First claim

What is claimed is:

1. A method for straightening curly hair comprising:
providing in a package a solid composition, wherein the solid composition comprises:
a hydrophobically modified alkali soluble acrylic polymer emulsion;
an active agent comprising a mixture of 3-(2-hydroxyethyl)-2-oxazolidinone, hexane-2,5-dione, and 2-hydroxy-butanedial;
a photocatalyst being a mixture of 8-hydroxy quinoline and 8-quinolinol-1-oxide;

and then mixing the solid composition with a cosmetically acceptable carrier to form a crosslinking composition comprising from about 10% to about 97% by weight of water, about 5% by weight of active agent, 100 ppm 8-hydroxy quinoline and 100 ppm of 8-quinolinol-1-oxide photocatalysts; applying said composition to curly hair, mechanically straightening the hair with a hair straightening appliance, wherein the temperature of the appliance is 250° F. while exposing the composition to electromagnetic radiation having a wavelength of from about 360 nm to about 750 nm;
wherein the crosslinking composition prepared by mixing the solid composition with the carrier has not been exposed to said radiation for a period of 10 minutes or more and where it is not a requirement that the solid composition has not been exposed to this radiation; and
wherein about 0.25 g of said crosslinking composition per gram of hair is employed in the method.

2. The method of claim 1 , wherein the hair straightening appliance comprises light-emitting diodes.

3. The method of claim 1 , wherein the composition is substantially free of: formaldehyde, derivatives of formaldehyde, formalin, and any compound that produces formaldehyde upon heating.

4. The method of claim 1 , wherein the method does not comprise a rinsing step.

Assignees

• Procter & Gamble
• The Procter And Gamble Plaza

Inventors

• Washington Randy Purnell
• Reed Jamie Angel
• Willey Alan David
• Adams Jacob Robert
• Sawin Philip Andrew
• Wos John August
• Gizaw Yonas

Classifications

• A61K8/498

  having 6-membered rings or their condensed derivatives, e.g. coumarin · CPC title

• A61K8/4973

  with oxygen as the only hetero atom · CPC title

• A61K8/347

  Phenols · CPC title

• A61K8/37

  Esters of carboxylic acids · CPC title

• A61K2800/81

  Preparation or application process involves irradiation · CPC title