Composition and process for semi-permanent straightening of the hair
US-10117817-B2 · Nov 6, 2018 · US
Method for straightening keratinous fibers using heating means and malic acid
US11013306B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11013306-B2 |
| Application number | US-201715661695-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 27, 2017 |
| Priority date | May 24, 2006 |
| Publication date | May 25, 2021 |
| Grant date | May 25, 2021 |
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Abstract
Official abstract text for this publication.
The invention concerns a method for straightening keratinous fibers including: (i) a step of applying on the keratinous fibers a hair straightening composition containing at least one alpha-hydroxy and/or keto acid derivative, the pH of said composition being not more than 9 (ii) a step of increasing the temperature of the keratinous fibers, using heating means, to a temperature ranging between 110 and 250° C.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for relaxing human hair fibers, comprising: applying to the hair fibers a hair relaxing composition comprising at least one α-hydroxy acid derivative chosen from malic acid, stereoisomers thereof, organic salts thereof, mineral salts thereof, or solvates thereof, wherein the pH of the composition is less than or equal to 9, and heating the hair fibers with a device that affords a temperature in the range of from 110° C. to 250° C. 2. The process of claim 1 , wherein the hair fibers are heated to a temperature ranging from 120° C. to 220° C. 3. The process of claim 1 , wherein the hair fibers are heated to a temperature ranging from 140° C. to 220° C. 4. The process of claim 1 , wherein the composition is applied to wet hair fibers. 5. The process of claim 4 , wherein the wet hair fibers are partially predried prior to heating the hair fibers with a device that affords a temperature in the range of from 110° C. to 250° C. 6. The process of claim 1 , wherein the molar concentration of the at least one α-hydroxy acid derivative ranges from 2M to 8M. 7. The process of claim 6 , wherein the molar concentration of the at least one α-hydroxy acid derivative ranges from 4M to 8M. 8. The process of claim 1 , wherein the pH of the composition is less than or equal to 7.
Assignees
Inventors
Classifications
- A45D7/06Primary
combined chemical and thermal · CPC title
Polysaccharides · CPC title
Preparations for permanent waving or straightening the hair · CPC title
Thermal properties · CPC title
Hydroxycarboxylic acids; Ketocarboxylic acids · CPC title
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- What does patent US11013306B2 cover?
- The invention concerns a method for straightening keratinous fibers including: (i) a step of applying on the keratinous fibers a hair straightening composition containing at least one alpha-hydroxy and/or keto acid derivative, the pH of said composition being not more than 9 (ii) a step of increasing the temperature of the keratinous fibers, using heating means, to a temperature ranging between…
- Who is the assignee on this patent?
- Oreal
- What technology area does this patent fall under?
- Primary CPC classification A45D7/06. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue May 25 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).