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CN-122028896-A - Methods and compositions for treating hair and repairing hair damage

CN122028896ACN 122028896 ACN122028896 ACN 122028896ACN-122028896-A

Abstract

The present disclosure relates to methods for the oxidative bleaching or dyeing of hair and the treatment of hair that has been subjected to oxidative bleaching or dyeing. These methods employ a strengthening composition and a conditioning composition and are operated in different procedures. Treatment of hair according to these procedures prevents, reduces or mitigates damage to hair caused by oxidative bleaching or dyeing processes. The strengthening composition comprises (a) citric acid, a salt thereof, or a combination thereof, (b) cyclodextrin, a salt thereof, or a combination thereof, (c) one or more polyols, and (d) water. The conditioning composition comprises (a) one or more cationic surfactants, (b) one or more non-silicone based fatty compounds, (c) one or more silicone oils, and (d) water. The method can strengthen hair, improve hair curl retention, prevent hair frizziness, and repair damage to hair caused by chemical bleaching or dyeing.

Inventors

  • C-C. Kai
  • R. Lugani

Assignees

  • 欧莱雅公司

Dates

Publication Date
20260512
Application Date
20240625
Priority Date
20230928

Claims (20)

  1. 1. A method of protecting hair and reducing damage to hair caused by oxidative bleaching or dyeing, the method comprising: (i) Applying a strengthening composition to hair to be oxidatively bleached or dyed and allowing the strengthening composition to remain on the hair for a first period of time, the strengthening composition comprising: (a) Citric acid; (b) Cyclodextrin; wherein the combined total of (i) (a) and (i) (b) is from about 2 to about 15 wt%; (c) One or more polyols having 2 to 10 carbon atoms, and (D) Water; wherein all weight percentages of (i) are based on the total weight of the strengthening composition; (ii) At the end of the first period of time, applying an oxidative bleaching composition or a dyeing composition to the hair and oxidatively bleaching or dyeing the hair without rinsing the strengthening composition from the hair; (iii) After oxidation bleaching or dyeing of the hair, cleaning the hair with a shampoo to remove the oxidation bleaching or dyeing composition from the hair; (iv) After rinsing the shampoo from the hair, applying a conditioning composition to the hair and allowing the conditioning composition to rest on the hair for a second period of time, the conditioning composition comprising; (a) One or more cationic surfactants; (b) One or more non-silicone-based fatty compounds; (c) One or more silicones, and (D) Water, and (V) At the end of the second period of time, the conditioning composition is rinsed from the hair at the end of the second period of time.
  2. 2. The method of claim 1, wherein the pH of the strengthening composition is about 2 to about 6.
  3. 3. The method of claim 1 or 2, wherein the molar ratio of citric acid of (i) (a) to cyclodextrin of (i) (b) is from about 20:1 to about 3:1 ((a): b)).
  4. 4. A composition according to any one of claims 1-3, wherein the one or more polyols having 2 to 10 carbon atoms are selected from ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1, 3-propanediol, glycerol, or combinations thereof.
  5. 5. The composition of claim 4, wherein at least one of the one or more polyols having 2 to 10 carbon atoms is glycerol.
  6. 6. The method of any one of claims 1-5, wherein the strengthening composition further comprises: (e) One or more cationic polysaccharides; (f) One or more polar oils, and/or (G) One or more nonionic emulsifiers.
  7. 7. The method of claim 6, comprising one or more cationic polysaccharides, wherein at least one of the one or more cationic polysaccharides is cationic guar.
  8. 8. The method of claim 6 or 7, comprising one or more nonionic emulsifiers, wherein at least one of the one or more nonionic emulsifiers is an alkoxylated nonionic emulsifier.
  9. 9. The method of claim 1, wherein the method comprises: (i) Applying a strengthening composition to hair to be oxidized bleached or dyed and allowing the strengthening composition to remain on the hair for a first period of time ranging from about 1 to about 30 minutes, the strengthening composition comprising: (a) About 1 to about 10 wt% citric acid; (b) About 0.5 to about 10 wt% cyclodextrin; Wherein the combined total of (a) and (b) is from about 2 to about 15 wt%. (C) About 0.1 to about 10 wt% of one or more polyols having 2 to 10 carbon atoms; (d) About 60 to about 96 wt% water; (e) Optionally, about 0.1 to about 5wt% of one or more cationic polysaccharides; (f) Optionally, about 0.1 to about 8 wt% of one or more polar oils; (g) Optionally, from about 0.1 to about 8wt% of one or more nonionic emulsifiers, and (H) Optionally, about 0.1 to about 10 wt% of one or more miscellaneous ingredients; wherein all weight percentages of (i) are based on the total weight of the strengthening composition; (ii) At the end of the first period of time, applying an oxidative bleaching composition or a dyeing composition to the hair and oxidatively bleaching or dyeing the hair without rinsing the strengthening composition from the hair; (iii) After oxidation bleaching or dyeing of the hair, cleaning the hair with a shampoo to remove the oxidation bleaching or dyeing composition from the hair; (iv) Applying a conditioning composition to the hair for a second period of time ranging from about 1 to about 30 minutes after rinsing the shampoo from the hair, the conditioning composition comprising; (a) About 0.5 to about 10 wt% of one or more cationic surfactants, based on the total weight of the conditioning composition; (b) About 1 to about 30 wt% of one or more fatty compounds, based on the total weight of the conditioning composition; (c) About 0.1 to about 5 wt% of one or more amino-functional silicones; (d) 60 to about 90 wt% water, based on the total weight of the conditioning composition; (e) Optionally, about 0.1 to about 8 wt% of one or more thickeners; (f) Optionally, about 0.1 to about 8 wt% of one or more water-soluble solvents, and (G) Optionally, about 0.1 to about 10 wt% of one or more miscellaneous ingredients; wherein all weight percentages of (iv) are based on the total weight of the conditioning composition, and (V) At the end of the second period of time, the conditioning composition is rinsed from the hair.
  10. 10. The method of any of the preceding claims, wherein the method toughens hair, improves curl retention of hair, prevents hair frizziness, and repairs damage to hair caused by chemical bleaching or dyeing of hair to a greater extent than if the method was performed without the use of a strengthening composition.
  11. 11. A method of protecting hair and reducing damage to hair caused by oxidative bleaching or dyeing, the method comprising: (i) Applying an oxidative bleaching composition or a coloring composition to the hair and subjecting the hair to oxidative bleaching or coloring, followed by cleaning the hair with a shampoo to remove the oxidative bleaching composition or the coloring composition from the hair; (ii) After rinsing the shampoo from the hair, applying a first dose of the strengthening composition to the hair and allowing the first dose of the strengthening composition to remain on the hair for a first period of time, the strengthening composition comprising: (a) Citric acid; (b) Cyclodextrin; wherein the combined total of (i) (a) and (i) (b) is from about 2 to about 15 wt%; (c) One or more polyols having 2 to 10 carbon atoms, and (D) Water; wherein all weight percentages of (ii) are based on the total weight of the strengthening composition; (iii) At the end of the first period of time, cleaning hair with a shampoo; (iv) After rinsing the shampoo from the hair, applying a second dose of the strengthening composition to the hair and allowing the second dose of the strengthening composition to remain on the hair for a second period of time; (v) At the end of the second period of time, applying a conditioning composition to the hair without rinsing the second dose of strengthening composition from the hair and allowing the conditioning composition to remain on the hair for a third period of time, the conditioning composition comprising: (a) One or more cationic surfactants; (b) One or more non-silicone-based fatty compounds; (c) One or more silicones, and (D) Water, and (Vi) At the end of the third period, the strengthening and conditioning compositions are rinsed from the hair.
  12. 12. The method of claim 11, wherein the pH of the strengthening composition is about 2 to about 6.
  13. 13. The method of claim 11 or 12, wherein the molar ratio of citric acid of (i) (a) to cyclodextrin of (i) (b) is from about 20:1 to about 3:1 ((a): b)).
  14. 14. The method of any one of claims 11-13, wherein the one or more polyols having 2 to 10 carbon atoms are selected from ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1, 3-propanediol, glycerol, or a combination thereof.
  15. 15. The method of claim 14, wherein at least one of the one or more polyols having 2 to 10 carbon atoms is glycerol.
  16. 16. The method of any one of claims 11-15, wherein the strengthening composition further comprises: (d) Optionally, one or more cationic polysaccharides; (f) One or more polar oils, and/or (G) One or more nonionic emulsifiers.
  17. 17. The method of claim 16, comprising one or more cationic polysaccharides, wherein at least one of the one or more cationic polysaccharides is cationic guar.
  18. 18. The method of claim 16 or 17, comprising one or more nonionic emulsifiers, wherein at least one of the one or more nonionic emulsifiers is an alkoxylated nonionic emulsifier.
  19. 19. The method of claim 11, wherein the method comprises: (i) Applying an oxidative bleaching composition or a coloring composition to the hair and subjecting the hair to oxidative bleaching or coloring, followed by cleaning the hair with a shampoo to remove the oxidative bleaching composition or the coloring composition from the hair; (ii) Applying a first dose of the strengthening composition to hair within about 30 minutes after rinsing the shampoo from the hair and allowing the first dose of the strengthening composition to remain on the hair for a first period of time of about 1 to about 30 minutes, the strengthening composition comprising: (a) About 1 to about 10 wt% citric acid; (b) About 0.5 to about 10 wt% cyclodextrin; Wherein the combined total of (a) and (b) is from about 2 to about 15 wt%. (C) About 0.1 to about 10 wt% of one or more polyols having 2 to 10 carbon atoms; (d) About 60 to about 96 wt% water; (e) Optionally, about 0.1 to about 5wt% of one or more cationic polysaccharides; (f) Optionally, about 0.1 to about 8 wt% of one or more polar oils; (g) Optionally, from about 0.1 to about 8wt% of one or more nonionic emulsifiers, and (H) Optionally, about 0.1 to about 10 wt% of one or more miscellaneous ingredients; wherein all weight percentages of (ii) are based on the total weight of the strengthening composition; (iii) At the end of the first period of time, applying the shampoo composition to the hair and cleaning the hair without rinsing the strengthening composition from the hair; (iv) Applying a second dose of the strengthening composition to the hair within about 30 minutes after rinsing the shampoo composition from the hair, and allowing the second dose of the strengthening composition to remain on the hair for a second period of time of about 1 to about 30 minutes; (v) At the end of the second period of time, applying a conditioning composition to the hair without rinsing the second dose of strengthening composition from the hair and allowing the conditioning composition to remain on the hair for a third period of time of about 1 to about 30 minutes, the conditioning composition comprising: (a) About 0.5 to about 10 wt% of one or more cationic surfactants, based on the total weight of the conditioning composition; (b) About 1 to about 30 wt% of one or more fatty compounds, based on the total weight of the conditioning composition; (c) About 0.1 to about 5 wt% of one or more amino-functional silicones; (d) 60 to about 90 wt% water, based on the total weight of the conditioning composition; (e) Optionally, about 0.1 to about 8 wt% of one or more thickeners; (f) Optionally, about 0.1 to about 8 wt% of one or more water-soluble solvents, and (G) Optionally, about 0.1 to about 10 wt% of one or more miscellaneous ingredients; wherein all weight percentages of (iii) are based on the total weight of the conditioning composition; (vi) At the end of the third period, the strengthening and conditioning compositions are rinsed from the hair.
  20. 20. The method of any one of claims 11-19, wherein the method toughens hair, improves curl retention of hair, prevents hair frizziness, and repairs damage to hair caused by chemical bleaching or dyeing of hair to a greater extent than if the method was performed without the use of the first and/or second agent strengthening composition on hair.

Description

Methods and compositions for treating hair and repairing hair damage Cross Reference to Related Applications The present application claims priority from U.S. patent application Ser. Nos. 18/355,533 and 18/355,526, filed on 7.20 of 2023, and priority from French patent application Ser. Nos. FR2310335 and FR2310312, filed on 28 of 9.2023, which are incorporated herein by reference in their entireties. Technical Field The present invention relates to methods and compositions for oxidative bleaching or dyeing of hair that prevent or minimize damage to hair, and to methods and compositions for treating oxidatively bleached or dyed hair. Oxidative bleaching or dyeing of hair is carried out by conventional procedures using strengthening and conditioning compositions. Background Many consumers use cosmetic and care compositions to improve the appearance of hair, for example by changing the color, style or shape of the hair, and/or by imparting various cosmetic characteristics to the hair, such as shine and conditioning. Hair may become dry or damaged due to various causes, such as wind and sun, malnutrition, mechanical damage (e.g., combing), chemical styling, hair coloring, heating, malnutrition, and the like. Even cleaning products remove natural oils from the hair, resulting in dryness, and thus a dull appearance, branching and frizziness. Chemical treatments of hair include bleaching and dyeing treatments that alter the color of the hair. Chemical treatments also include procedures to permanently alter the shape and structure of hair, such as by permanent waving (perming), curling (waving), smoothing (relaxing), or straightening hair. These chemical treatments change the appearance of the hair by changing the physical structure of the hair, which inevitably causes some degree of damage to the hair. Environmental factors such as sea water, sunlight and high temperature are also known to damage hair. Damaged hair is characterized by unnatural changes in the protein structure of individual hairs or hair shafts. The popularity and use of oils for hair treatment has increased due to their effectiveness and simplicity. Common oils include olive oil, mineral oil, avocado oil, almond kernel oil (apricot kernel oil), rice bran oil and coconut oil. However, these treatments may make the hair greasy. Furthermore, care typically takes more than a few hours (e.g., 8 hours) to see the effect, and often requires multiple treatments, making it time consuming and laborious. Hair damage can lead to bifurcation, dryness, breakage, and hair becoming friable and difficult to manage. Since the visible portion of the hair has died, it does not have the ability to regenerate itself. There are many treatment products on the market and in salons that claim to repair damaged hair. These include opsonin, hot oil treatment, hydrolyzed protein, vitamin preparations, and ectopic fruit, leaf, or root extracts. However, these treatments have limited improvement to hair. Thus, there is a need for hair treatment techniques that straighten, soften or style hair without damaging the hair. There remains a need to repair damage to hair caused by oxidative bleaching or dyeing processes. Disclosure of Invention The present invention relates to methods and compositions for the oxidative bleaching or dyeing of hair. These methods are based on the conventional procedure of using the boosting composition and the conditioning composition in combination in an oxidative bleaching or dyeing process. The inventors have found that the use of the strengthening and conditioning compositions in the claimed conventional process not only conditions the hair, but surprisingly improves the physical and mechanical properties and thermal integrity of the hair fibres, and that these improvements are statistically significant. The methods and compositions can also repair damage to hair caused by prior chemical bleaching or dyeing. For example, these methods significantly improve the elasticity, strength and frizziness resistance of the hair fibers, which is manifested by statistically significant improvements in elastic modulus, stress at break and thermal integrity. The enhancing and conditioning compositions may be used in pre-or post-treatment procedures when oxidizing bleaching or coloring hair. The strengthening composition generally comprises (A) Citric acid, salts thereof, or combinations thereof; (b) Cyclodextrin, derivatives thereof, or combinations thereof; Wherein the combined total of (a) and (b) is from about 2 to about 15 wt%, based on the total weight of the strengthening composition; (c) One or more polyols having 2 to 10 carbon atoms, and (D) And (3) water. The pH of the strengthening composition is from about 2 to about 6, preferably from about 2 to about 5. Further, the molar ratio of citric acid, salt thereof, or combination thereof of (a) to cyclodextrin, derivative thereof, or combination thereof of (b) is typically from about 20:1 to about 3:1 ((a)