Hair cosmetics

TWI942702BActive Publication Date: 2026-10-21KAO CORP
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Patent Information

Application Number
TW109111534
Authority / Receiving Office
TW · TW
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-12-25
Filing Date
2020-04-06
Publication Date
2026-10-21
Estimated Expiration
2040-04-05

AI Technical Summary

Technical Problem

Existing temporary hair dyes often fail to provide consistent color development regardless of the base hair color, with dark hair requiring more pigment to achieve visibility and light hair becoming overly colored, and they also suffer from dye transfer and poor handling properties.

Method used

A hair cosmetic composition containing interference pearlescent pigment, film-forming polymer, and non-aqueous solvent, with specific ratios and content levels of these components, ensuring quick drying and minimal dye transfer while maintaining color consistency across different hair colors.

Benefits of technology

The composition achieves quick drying, reduces dye transfer to skin and clothes, provides a good hair feel, and ensures consistent color development irrespective of the base hair color, offering a vibrant yet controlled dyeing effect.

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Abstract

This invention relates to a hair cosmetic containing the following components (A) to (D): (A) an interference pearlescent pigment, (B) pigments other than component (A), (C) a film-forming polymer, and (D) a non-aqueous solvent. The total content of components (A) and (B) is 2.0% by mass to 12.0% by mass, the mass ratio of component (A) to the total content of components (A) and (B) [(A) / {(A)+(B)}] is 0.30 to 0.96, the mass ratio of component (C) to the total content of components (A) and (B) [(C) / {(A)+(B)}] is 0.5 to 2.4, and the water content is 40% by mass or less.
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Description

[Technical Field] This invention relates to a hair cosmetic material. [Previous Technology] Hair dyes are classified as follows: permanent hair dyes (hair color, etc.), which color the hair by using oxidative dyes to develop color in the hair; semi-permanent hair dyes (acid hair dye, etc.), which color the hair by directly allowing the dye to penetrate and be absorbed into the hair; temporary hair dyes (hair mascara, etc.), which color the hair by forming a colored film containing colorant (mainly pigment); etc. Among these, temporary hair dyes are popular because they cause less damage to the hair, can be easily removed by shampooing, and are easy to use, making them popular for those who want to easily enjoy hair dyeing. Previous temporary hair dyes included compositions containing film-forming polymers that fix the colorant to the hair as a colored film, impart water resistance to the colored film, and prevent migration to the skin or clothing. Temporary hair dyes include those intended to cover gray hair and those intended to impart vibrant colors to hair for enhanced fashionability. Regarding the latter, research has been conducted on a temporary hair dye for imparting vibrant colors to black hair. For example, Patent Document 1 discloses a composition that, after coloring hair, does not impair its styling properties, exhibits good combability, does not fade upon friction or peeling of the colored film, demonstrates excellent abrasion resistance, and even when a sufficient amount is applied to impart vibrant color to black hair, it exhibits excellent washout properties. This temporary hair dye composition contains pigments and two types of organopolysiloxanes in specific ratios. Patent Documents 2 and 3 disclose temporary hair dye compositions that, after coloring hair, are not sticky or stiff, and possess excellent combability, abrasion resistance, water resistance, and washout properties. These compositions respectively include: a composition containing a non-crosslinked anionic copolymer comprising specific structural units and polyether-modified silicone in specific ratios, and containing pigments; and a composition containing two copolymers comprising specific structural units and pigments. [Previous Technical Documents] [Patent Documents] Patent Document 1: Japanese Patent Application Publication No. 2017-114815; Patent Document 2: Japanese Patent Application Publication No. 2019-6690; Patent Document 3: Japanese Patent Application Publication No. 2019-6691 [Summary of the Invention] The present invention relates to the following. [1] A hair cosmetic containing the following components (A) to (D): (A) an interference pearlescent pigment, (B) a pigment other than component (A), (C) a film-forming polymer, and (D) a non-aqueous solvent, wherein the total content of component (A) and component (B) is 2.0% by mass or more and 12.0% by mass or less, the mass ratio of component (A) to the total content of component (A) and component (B) [(A) / {(A)+(B)}] is 0.30 to 0.96, the mass ratio of component (C) to the total content of component (A) and component (B) [(C) / {(A)+(B)}] is 0.5 to 2.4, and the water content is 40% by mass or less. [2] Use of a composition as a hair cosmetic, wherein the composition contains the following components (A) to (D): (A) an interference pearlescent pigment, (B) a pigment other than component (A), (C) a film-forming polymer, and (D) a non-aqueous solvent, and the total content of components (A) and (B) is 2.0% by mass or more and 12.0% by mass or less, the mass ratio of component (A) to the total content of components (A) and (B) [(A) / {(A)+(B)}] is 0.30 to 0.96, the mass ratio of component (C) to the total content of components (A) and (B) [(C) / {(A)+(B)}] is 0.5 to 2.4, and the water content is 40% by mass or less.

Implementation Method

Claims

1. A hair cosmetic containing the following components (A) to (D): (A) an interference pearlescent pigment, (B) a pigment other than component (A), (C) a film-forming polymer, and (D) a non-aqueous solvent, wherein the total content of components (A) and (B) is 2.0% by mass or more and 12.0% by mass, the mass ratio of component (A) to the total content of components (A) and (B) [(A) / {(A)+(B)}] is 0.30 to 0.96, the mass ratio of component (C) to the total content of components (A) and (B) [(C) / {(A)+(B)}] is 0.5 to 2.4, the water content is 5% by mass or less, component (D) contains 30% by mass or more of ethanol, and the content of component (D) is 50% by mass or more.

2. As in claim 1, the hair cosmetic material wherein the mass ratio of component (C) to the total content of components (A) and (B) [(C) / {(A)+(B)}] is 0.5 or more and 2.0 or less.

3. For hair cosmetics as requested in item 1 or 2, the mass ratio of component (C) to the total content of components (A) and (B) [(C) / {(A)+(B)}] is 0.5 or more and 1.4 or less.

4. The hair cosmetics requested in item 1 or 2 are temporary hair dyes.

5. Use of a composition as a hair cosmetic, wherein the composition contains the following components (A) to (D): (A) an interference pearlescent pigment, (B) a pigment other than component (A), (C) a film-forming polymer, and (D) a non-aqueous solvent, and the total content of components (A) and (B) is 2.0% by mass or more and 12.0% by mass or less, the mass ratio of component (A) to the total content of components (A) and (B) [(A) / {(A)+(B)}] is 0.30 to 0.96, the mass ratio of component (C) to the total content of components (A) and (B) [(C) / {(A)+(B)}] is 0.5 to 2.4, the water content is 5% by mass or less, component (D) contains 30% by mass or more of ethanol, and the content of component (D) is 50% by mass or more.

Citation Information

Patent Citations

  • Hair cosmetic applying product

    JP1999049648A

  • Hair cosmetic

    JP1999171729A