Methods and formulations for curling hair

• US 9,872,821 B1
• Filed: 06/30/2017
• Issued: 01/23/2018
• Est. Priority Date: 07/12/2016
• Status: Active Grant

• Current Assignee: Olaplex, Inc.
• Original Assignee: Liqwd, Inc.
• Inventors: Pressly, Eric D., Hawker, Craig J.
• Primary Examiner(s): VANHORN, ABIGAIL LOUISE
• Application Number:
  US15/640,044
• Publication Number:
  US 20180015015A1
• Time in Patent Office: 207 Days
• Field of Search: None
• CPC Class Codes: A45D 7/04 chemical
• CPC Class Codes: A61K 2800/30 Characterized by the absence of a particular group of ingredients
• CPC Class Codes: A61K 2800/882 Mixing prior to application
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61K 8/36 Carboxylic acids; Salts or anhydrides thereof
• CPC Class Codes: A61K 8/362 Polycarboxylic acids
• CPC Class Codes: A61K 8/41 Amines
• CPC Class Codes: A61K 8/466 containing sulfonic acid derivatives; Salts
• CPC Class Codes: A61Q 5/04 Preparations for permanent waving or straightening the hair
• CPC Class Codes: A61Q 5/06 Preparations for styling the hair, e.g. by temporary shaping or colouring

Abstract

Methods, formulations, and kits for curling and/or preventing damage in the curling of hair are disclosed herein. Treatment with one or more hydroxide-containing agents in combination with one or more active agents can reshape hair, without the need for sulfur-containing reducing agents. To impart curl to hair, the active agent(s) and the hydroxide-containing agent(s) are applied either as a combined formulation or as separate formulations which are applied simultaneously. Use of the active agent along with a hydroxide-containing agent allows the level of curl imparted to hair to be controlled, as compared to the natural amount of curl, if any, in the untreated hair.

Claims

1. A method comprising:

(a) applying to hair a formulation comprising one or more hydroxide-containing agents; and

one or more active agents selected from the group consisting of maleic acid, acrylic acid, methyl acrylic acid, and vinyl sulfonic acid, and simple salts thereof; and

(b) reshaping the hair;

wherein the method is substantially free of a sulfur-containing reducing agent.

2. The method of claim 1, wherein following steps (a) and (b), the hair retains curl when subjected to one or more wash cycles.

3. The method of claim 1, wherein step (b) occurs prior to step (a).

4. The method of claim 1, wherein the formulation is a combined formulation, and wherein prior to step (a), a first and a second formulation are mixed to form the combined formulation, wherein the combined formulation has a pH of about 10 or greater.

5. The method of claim 1, wherein the weight ratio of the one or more hydroxide-containing agents to the one or more active agents is in the range of about 5:

1 to about 1;

5.

6. The method of claim 1, wherein the one or more hydroxide-containing agents are selected from the group consisting of sodium hydroxide, lithium hydroxide, potassium hydroxide, guanidinium hydroxide, and ammonium hydroxide.

7. The method of claim 1, wherein the active agent is present in an amount ranging from about 0.5 wt % to about 10 wt % of the formulation.

8. The method of claim 1, wherein the step of reshaping the hair comprises rolling the hair on a roller, rod, or curler, or a combination thereof.

9. The method of claim 1, further comprising:

(c) applying to the hair a second active agent formulation comprising a second active agent, wherein the second active agent is maleic acid or a simple salt thereof, acrylic acid or a simple salt thereof, methyl acrylic acid or a simple salt thereof, and vinyl sulfonic acid or a simple salt thereof,

10. The method of claim 9, wherein the second active agent formulation comprises about 0.1 to about 5 wt % of the second active agent.

11. A method comprising:

(a) applying to hair a formulation comprising one or more hydroxide-containing agents and

maleic acid or a salt or a mixture thereof;

wherein the pH of the formulation is about 10 or greater; and

(b) reshaping the hair;

wherein the method is substantially free of a sulfur-containing reducing agent.

12. The method of claim 11, wherein following steps (a) and (b), the hair retains curl when subjected to one or more wash cycles.

13. The method of claim 11, wherein step (b) occurs prior to step (a).

14. The method of claim 11, wherein the formulation is a combined formulation, and wherein prior to step (a), a first and a second formulation are mixed to form the combined formulation, wherein the combined formulation has a pH of about 10 or greater.

15. The method of claim 11, wherein the weight ratio of the one or more hydroxide-containing agents to the maleic acid is in the range of about 5:

1 to about 1;

5.

16. The method of claim 11, wherein the one or more hydroxide-containing agents are selected from the group consisting of sodium hydroxide, lithium hydroxide, potassium hydroxide, guanidinium hydroxide, and ammonium hydroxide.

17. The method of claim 11, wherein the active agent is present in an amount ranging from about 0.5 wt % to about 10 wt % of the formulation.

18. The method of claim 11, wherein the step of reshaping the hair comprises rolling the hair on a roller, rod, or curler, or a combination thereof.

19. The method of claim 11, further comprising:

(c) applying to the hair a second active agent formulation comprising a second active agent, wherein the second active agent is maleic acid or a simple salt thereof, acrylic acid or a simple salt thereof, methyl acrylic acid or a simple salt thereof, vinyl sulfonic acid or a simple salt thereof,

20. The method of claim 19, wherein the second active agent formulation comprises about 0.1 to about 5 wt % of the second active agent.

21. A method comprising:

(a) applying to hair a formulation comprising one or more hydroxide-containing agents and one or more active agents selected from the group consisting of;

22. The method of claim 21, wherein following steps (a) and (b), the hair retains curl when subjected to one or more wash cycles.

23. The method of claim 21, wherein step (b) occurs prior to step (a).

24. The method of claim 21, wherein the formulation is a combined formulation, and wherein prior to step (a), a first and a second formulation are mixed to form the combined formulation, wherein the combined formulation has a pH of about 10 or greater.

25. The method of claim 21, wherein the weight ratio of the one or more hydroxide-containing agents to the one or more active agents is in the range of about 5:

1 to about 1;

5.

26. The method of claim 21, wherein the one or more hydroxide-containing agents are selected from the group consisting of sodium hydroxide, lithium hydroxide, potassium hydroxide, guanidinium hydroxide, and ammonium hydroxide.

27. The method of claim 21, wherein the active agent is present in an amount ranging from about 0.5 wt % to about 10 wt % of the formulation.

28. The method of claim 21, wherein the step of reshaping the hair comprises rolling the hair on a roller, rod, or curler, or a combination thereof.

29. The method of claim 21, further comprising:

(c) applying to the hair a second active agent formulation comprising a second active agent, wherein the second active agent is maleic acid or a simple salt thereof, acrylic acid or a simple salt thereof, methyl acrylic acid or a simple salt thereof, vinyl sulfonic acid or a simple salt thereof,

30. The method of claim 29, wherein the second active agent formulation comprises about 0.1 to about 5 wt % of the second active agent.