Hair styling method

• US 8,540,975 B2
• Filed: 09/03/2009
• Issued: 09/24/2013
• Est. Priority Date: 09/03/2008
• Status: Expired due to Fees

• Current Assignee: Alberto-Culver Company (Unilever PLC)
• Original Assignee: Alberto-Culver Company (Unilever PLC)
• Inventors: Navarro, Jean Louise Razon, Verboom, Gilles M
• Primary Examiner(s): VENKAT, JYOTHSNA A
• Application Number:
  US13/061,804
• Publication Number:
  US 20110180092A1
• Time in Patent Office: 1,482 Days
• Field of Search: None
• US Class Current: 424/70.2
• CPC Class Codes: A61K 2800/884 Sequential application
• CPC Class Codes: A61K 8/365 Hydroxycarboxylic acids; Ketocarboxylic acids
• CPC Class Codes: A61K 8/817 Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions or derivatives of such polymers, e.g. vinylimidazol, vinylcaprolactame, allylamines (Polyquaternium 6)
• CPC Class Codes: A61Q 5/06 Preparations for styling the hair, e.g. by temporary shaping or colouring

Abstract

Provided is a method for styling mammalian hair that includes contacting the hair with a composition that includes a poly(vinylamine-vinylformamide) copolymer and a first carrier, contacting the hair with a composition that includes a citrate and a second carrier, and styling the hair. The method of the present invention promotes improved hair styling properties such as improved curl retention and straightness retention, e.g., under conditions of high relative humidity and temperature. The method can be used for semi-permanently straightening or curling the hair. Also provided is a method for controlling frizz by applying the copolymer and citrate compositions.

Claims

1. A method of styling mammalian hair, wherein said method comprises:

either first contacting the hair for about 1 to 20 minutes with a styling-effective amount of a composition comprising a poly(vinylamine-vinylformamide) copolymer and an aqueous carrier; and

thereafter contacting the hair for about 1 to 20 minutes with a styling-effective amount of a composition comprising a citrate and an aqueous carrier;

or contacting the hair for about 1 to 20 minutes with a styling-effective amount of a composition comprising a citrate and an aqueous carrier; and

thereafter contacting the hair for about 1 to 20 minutes with a styling-effective amount of composition comprising a poly(vinylamine-vinylformamide) copolymer and an aqueous carrier; and

subsequently styling the hair by contacting the hair with a device comprising at least one flat surface at a temperature of at least about 100°

C. for at least about 1 second to at least semi-permanently, straighten the hair wherein the poly(vinylamine-vinylformamide) copolymer comprises a high molecular weight poly(vinylamine-vinylformamide) copolymer, a low molecular weight poly(vinylamine-vinylformamide) copolymer, or a combination thereof and wherein the citrate is selected from the group consisting of citrate salts of sodium, citrate salts of potassium and citrate salts of calcium.

2. The method of claim 1, wherein the citrate salt of sodium is disodium citrate.

3. The method of claim 1, wherein the high molecular weight poly(vinylamine-vinylformamide) copolymer comprises at most about 95 mol % vinylamine monomers.

4. The method of claim 1, wherein the high molecular weight poly(vinylamine-vinylformamide) copolymer comprises at most about 50 mol % vinyl amine monomers.

5. The method of claim 1, wherein the high molecular weight poly(vinylamine-vinylformamide) copolymer comprises at most about 30 mol % vinyl amine monomers.

6. The method of claim 1, wherein the high molecular weight poly(vinylamine-vinylformamide) copolymer comprises at most about 10 mol % vinyl amine monomers.

7. The method of claim 1, wherein the low molecular weight poly(vinylamine-vinylformamide) copolymer comprises about 95 mol % vinyl amine monomers.

8. The method of claim 1, wherein either composition further comprises a conditioning agent.

9. The method of claim 8, wherein the conditioning agent is present in an amount of about 0.25 wt % to about 1.5 wt %.

10. The method of claim 1, wherein either composition further comprises a surfactant.

11. The method of claim 1, wherein either composition further comprises propellant.

12. The method of claim 11, wherein either composition is in the form of a mousse or a gel.

13. The method of claim further comprising the step of rinsing the hair with water after contacting the hair with both compositions.