Hair treatment methods

• US 9,364,403 B2
• Filed: 03/22/2013
• Issued: 06/14/2016
• Est. Priority Date: 04/02/2012
• Status: Active Grant

• Current Assignee: HSNF Limited
• Original Assignee: Perachem Limited
• Inventors: Hawkes, Jamie Anthony, Lewis, David Malcolm, Mama, John
• Primary Examiner(s): ELHILO, EISA B
• Application Number:
  US14/389,950
• Publication Number:
  US 20150068548A1
• Time in Patent Office: 1,180 Days
• Field of Search: 840/5
• US Class Current: 1/1
• CPC Class Codes: A61K 2800/30 Characterized by the absence of a particular group of ingredients
• CPC Class Codes: A61K 2800/4324 in preparations for permanently dyeing the hair
• CPC Class Codes: A61K 2800/884 Sequential application
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61K 8/23 Sulfur; Selenium; Tellurium; Compounds thereof
• CPC Class Codes: A61K 8/42 Amides
• CPC Class Codes: A61K 8/447 containing sulfur
• CPC Class Codes: A61K 8/46 containing sulfur A61K8/44 takes precedence
• CPC Class Codes: A61K 8/466 containing sulfonic acid derivatives; Salts
• CPC Class Codes: A61Q 5/10 Preparations for permanently dyeing the hair
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners

Abstract

A coloring composition comprising: (i) at least 0.0001 wt % of a water-soluble dye compound containing one or more sulfonate and/or carboxylate groups; (ii) at least 0.1 wt % urea; (iii) from 0.1 to 2.5 wt % of a thiol; (iv) less than 0.5 wt % ammonia; and (v) less than 0.5 wt % sulfite ions.

Claims

1. A colouring composition comprising:

(i) at least 0.0001 wt % of a water-soluble dye compound containing one or more sulfonate and/or carboxylate groups;

(ii) at least 0.1 wt % urea;

(iii) from 0.1 to 2.5 wt % of a thiol;

(iv) less than 0.5 wt % ammonia; and

(v) less than 0.5 wt % sulfite ions

wherein the composition comprises less than 2 wt % fatty acids and at least 75 wt % water.

2. A colouring composition according to claim 1 comprising from 2 to 15 wt % urea.

3. A colouring composition according to claim 1 wherein the thiol is selected from thioglycolic acid, thiolactic acid, dihydrolipoate, thioglycerol, mercaptopropionic acid, cysteine, N-substituted cysteines, cysteamines, N-substituted cysteamines, thioethanol, thiosulfate, sulfide anion, 1-thiopropane 3-sulfonate, and salts and/or esters thereof.

4. A colouring composition according to claim 3 wherein the thiol is thioglycolic acid or a salt thereof.

5. A colouring composition according to claim 1 which has a pH from 8 to 11.5.

6. A method of colouring a material, the method comprising contacting the material with a colouring composition as claimed in claim 1.

7. A method of coloring a material which involves the steps of:

(a) contacting the material with a composition as claimed in claim 1;

(b) rinsing the material; and

(c) contacting the material with an oxidising composition.

8. A method according to claim 7 wherein the oxidising composition is acidic.

9. A method according to claim 7 which further involves a step (d) of contacting the material with a conditioning composition comprising a quaternary ammonium compound.