A hair straightening or hair styling composition and method of use thereof

A composition and hair technology, applied in hair care, pharmaceutical formulations, cosmetic preparations, etc.

Pending Publication Date: 2021-10-29
埃斯普投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Over the past few years, various techniques for straightening curly hair have been proposed, but none satisfactorily addresses all of these challenges

Method used

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  • A hair straightening or hair styling composition and method of use thereof
  • A hair straightening or hair styling composition and method of use thereof
  • A hair straightening or hair styling composition and method of use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0059] Examples 1-6: The examples detailed in Table I list the hair straightening efficiency (Effs), showing that when citraconic acid is mixed with low percentage levels of reducing agent, solvent (ethylene carbonate) and buffer (di Sodium acetate) in combination, the level of hair straightening efficiency (Effs) is greatly increased due to the synergistic effect of these ingredients.

[0060] Table I: Use of citraconic acid alone or in synergistic combination with other active substances

[0061]

Embodiment 7-12

[0063] Table II: Combinations without citraconic acid and other active substances

[0064]

[0065]

[0066] Table II shows the straightening efficiency values ​​for various aldehydes, ketones and alcohols obtained when citraconic acid was absent from the formulation, as indicated in the table. Most straightening efficiency values ​​drop sharply down to values ​​as low as 50% (see Table II). Both observations clearly show that the combination of citraconic acid with the selected aldehydes, ketones and alcohols shown in the examples leads to a synergistic hair straightening effect.

Embodiment 13-21

[0068] Table III: Citraconic acid alone or in synergistic combination with other active substances

[0069]

[0070] When citraconic acid was added to the formulation, the straightening efficiency values ​​increased significantly to values ​​above 80%, as shown in Table III above. Furthermore, Table III also shows that 20% citraconic acid alone, when combined with sodium diacetate as a buffer, produces a straightening efficiency of less than 70%. Both observations clearly show that the combination of citraconic acid with the selected aldehydes, ketones and alcohols shown in the examples leads to a synergistic hair straightening effect.

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Abstract

A hair straightening or styling composition provided herein comprises (i) citraconic acid; (ii) (a) a reducing agent and / or (b) an aldehyde, a. thioacetal, a. ketone or an alcohol; (iii) a buffering agent; (iv) an oxidizing agent; (v) optionally a carboxylic or dicarboxylic acid; and (vi) at least one solvent. Also provided herein is a method of straightening or styling hair using such composition.

Description

technical field [0001] The present application relates to a composition for straightening or styling hair, and methods of using said composition to style or straighten human hair. Background technique [0002] We all know that the process of turning curly hair into straight hair presents many difficult challenges. Among them, three important challenges include: (i) the safety of the active ingredients used; (ii) good hair straightening efficiency; and (iii) the need for a practical formulation that is robust during hot ironing. Over the past few years, various techniques for straightening curly hair have been proposed, but none satisfactorily addresses all of these challenges. [0003] Canadian Patent Publication CA1081125A [assigned to Helene Curtis Industries Inc.] and U.S. Patent No. 7,622,104 [assigned to L'Oreal SA] disclose a method of straightening hair called a reverse perm in which thioglycolic acid derivatives or Sulfites break disulfide bonds, followed by bond r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/04A61K8/44A61K8/81
CPCA61Q5/06A61Q5/04A61K8/362A61K8/33A61K8/22A61K8/35A61K8/34A61K8/46A61K8/37
Inventor M·加梅-加西亚Y·周
Owner 埃斯普投资有限公司
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