Methods for treating relaxed hair

• US 9,717,668 B2
• Filed: 11/02/2016
• Issued: 08/01/2017
• Est. Priority Date: 04/24/2015
• Status: Active Grant

• Current Assignee: Olaplex, Inc.
• Original Assignee: Liqwd, Inc.
• Inventors: Pressly, Eric D., Hawker, Craig J.
• Primary Examiner(s): Fisher, Abigail
• Application Number:
  US15/341,893
• Publication Number:
  US 20170071838A1
• Time in Patent Office: 272 Days
• Field of Search: None
• CPC Class Codes: A45D 7/00 Processes of waving, straightening or curling hair
• CPC Class Codes: A45D 7/04 chemical
• CPC Class Codes: A61K 2800/59 Mixtures
• CPC Class Codes: A61K 2800/882 Mixing prior to application
• CPC Class Codes: A61K 2800/884 Sequential 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 8/416 Quaternary ammonium compounds A61K8/35 takes precedence
• 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 5/02 Preparations for cleaning the hair
• CPC Class Codes: A61Q 5/04 Preparations for permanent waving or straightening the hair
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners

Abstract

Methods and kits for treating hair or preventing damage in the relaxing of hair are disclosed herein. Hair that is damaged during a relaxing treatment with hydroxide-containing relaxing agents, can be treated with formulations containing one or more active agents. The active agent formulations can be applied simultaneously with the hair relaxing formulation, or optionally applied immediately following application of the relaxing formulation, to reduce damage and breakage. Use of the active agent formulation along with a relaxing treatment can be used to control the level of curl achieved or retained in the relaxed hair, as compared to the natural amount of curl in the untreated hair.

Claims

1. A method for achieving a desired level of curl in hair comprising:

(a) applying to the hair one or more relaxing agents at an alkaline pH, wherein at least one of the relaxing agents is an alkali metal containing hydroxide; and

(b) applying to the hair an active agent of Formula I;

2. The method of claim 1, wherein during steps (a) and (b) the one or more relaxing agents and the active agent are applied as a mixture, wherein the mixture comprises the one or more relaxing agents and the active agent.

3. The method of claim 2, wherein the active agent is present in an amount ranging from about 0.01 wt % to about 50 wt % of the mixture.

4. The method of claim 2, wherein the active agent is present in an amount ranging from about 0.1 wt % to about 50 wt % of the mixture.

5. The method of claim 2, wherein the active agent is present in an amount ranging from about 0.1 wt % to about 5 wt % of the mixture.

6. The method of claim 2, wherein the active agent is present in an amount ranging from about 1 wt % to about 5 wt % of the mixture.

7. The method of claim 1, wherein the one or more relaxing agents are provided in a first formulation and wherein the active agent is provided in a second formulation, wherein the weight ratio of the first formulation to the second formulation is about 10:

1 to about 1;

1.

8. The method of claim 1, wherein the alkali metal containing hydroxide is selected from the group consisting of sodium hydroxide, lithium hydroxide, and potassium hydroxide.

9. The method of claim 1, further comprising,

(c) rinsing, shampooing, and/or conditioning the hair, wherein step (c) occurs subsequent to steps (a) and (b).

10. The method of claim 1, wherein the active agent is:

11. The method of claim 1, wherein the active agent is present in an effective amount to retain a level of curl (percent curl retention) in the treated hair in the range of about 0-99%, compared to the amount of curl in the hair prior to steps (a) and (b);

and

wherein the percent curl retention is determined according to;

Percent Curl Retention=(L_ext−

L_f)/(L_ext−

L_i)×

100

where L_ext is the length of hair prior to steps (a) and (b) when fully extended, L_f is the final, non-extended length of the hair following steps (a) and (b), and L_i is the initial length of hair prior to steps (a) and (b) in its non-extended state, and wherein L_ext does not equal L_i.

12. The method of claim 11, wherein the percent curl retention is 5% or greater.

13. The method of claim 11, wherein the percent curl retention is between 0% and 10%.

14. The method of claim 11, wherein the percent curl retention is 50% or greater.

15. A method for achieving a desired level of curl in hair comprising:

(a) applying to the hair one or more relaxing agents at an alkaline pH, wherein at least one of the relaxing agents is an alkali metal containing hydroxide; and

(b) applying to the hair an active agent wherein the active agent has the formula;

16. The method of claim 15, wherein during steps (a) and (b) the one or more relaxing agents and the active agent are applied as a mixture, wherein the mixture comprises the one or more relaxing agents and the active agent.

17. The method of claim 16, wherein the active agent is present in an amount ranging from about 0.01 wt % to about 50 wt % of the mixture.

18. The method of claim 16, wherein the active agent is present in an amount ranging from about 0.1 wt % to about 50 wt % of the mixture.

19. The method of claim 16, wherein the active agent is present in an amount ranging from about 0.1 wt % to about 5 wt % of the mixture.

20. The method of claim 16, wherein the active agent is present in an amount ranging from about 1 wt % to about 5 wt % of the mixture.

21. The method of claim 16, wherein the alkali metal containing hydroxide is selected from the group consisting of sodium hydroxide, lithium hydroxide, and potassium hydroxide.

22. The method of claim 16, further comprising,

(c) rinsing, shampooing, and/or conditioning the hair,

wherein step (c) occurs subsequent to steps (a) and (b) and within 45 minutes following steps (a) and (b).

23. The method of claim 15, wherein the one or more relaxing agents are provided in a first formulation and wherein the active agent is provided in a second formulation, wherein the weight ratio of the first formulation to the second formulation is about 10:

1 to about 1;

1.

24. The method of claim 15, wherein the alkali metal containing hydroxide is selected from the group consisting of sodium hydroxide, lithium hydroxide, and potassium hydroxide.

25. The method of claim 15, further comprising,

(c) rinsing, shampooing, and/or conditioning the hair, wherein step (c) occurs subsequent to steps (a) and (b).

26. The method of claim 15, wherein the percent curl retention is greater than 50%.

27. The method of claim 15, wherein the active agent is present in an effective amount to retain a level of curl (percent curl retention) in the treated hair in the range of about 0-99%, compared to the amount of curl in the hair prior to steps (a) and (b);

and

wherein the percent curl retention is determined according to

Percent Curl Retention=(L_ext−

L_f)/(L_ext−

L_i)×

100

where L_ext is the length of hair prior to steps (a) and (b) when fully extended, L_f is the final, non-extended length of the hair following steps (a) and (b), and L_i is the initial length of hair prior to steps (a) and (b) in its non-extended state, and wherein L_ext does not equal L_i.

28. The method of claim 27, wherein the percent curl retention is 5% or greater.

29. The method of claim 27, wherein the percent curl retention is between 0% and 10%.

30. The method of claim 27, wherein the percent curl retention is 50% or greater.