Peptide Hair Composition with Swelling Solvent

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Solution Overview

Problem

Existing hair cosmetic compositions using polypeptides or polypeptide derivatives face challenges in effectively preventing or repairing hair damage due to their varying molecular weight distributions and penetrability issues, leading to insufficient prevention of split ends and broken hair.

Innovation Solution

A hair cosmetic composition containing specific peptides with amino acid sequences that have high homology and penetrability, combined with a hair-swelling organic solvent, to enhance repair and protection of hair.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If polypeptides with large molecular weight are used to improve hair surface modification and sensory properties, then appearance and feeling to the touch are improved, but penetrability into hair is low and substantive prevention of hair damage is insufficient

Engineering Contradiction:

Improvehair surface modificationVSAvoidsubstantive prevention of hair damage

Core Design Contradiction:

ShapeVSReliability

Solution Approach 1:

The patent segments the polypeptide into smaller peptide units with specific amino acid sequences (5-50 residues) that can penetrate hair more effectively while maintaining the desired functional properties through controlled molecular size and sequence composition

Inventive Principle:

Principle #1Segmentation

2Reliability

If polypeptides with small molecular weight are used to improve penetrability into hair, then substantive prevention of hair damage is enhanced, but ability to remain on hair is low and persistence of effect is reduced

Engineering Contradiction:

Improvesubstantive prevention of hair damageVSAvoidpersistence of effect

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent optimizes the peptide molecular weight parameter to a specific range (5-50 amino acid residues) and controls the amino acid composition to achieve the right balance between penetrability and persistence, preventing both split ends and broken hair effectively

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If polypeptides with broad molecular weight distribution are used, then various hair properties are addressed, but composition varies between protein sources and production units leading to varied effects

Engineering Contradiction:

Improvehair property coverageVSAvoidcomposition consistency

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent specifies particular amino acid sequences (Sequence Nos. 1-6) with defined local compositions and properties, ensuring consistent peptide structure and function across different production batches while maintaining effectiveness for hair damage prevention

Inventive Principle:

Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The composition effectively repairs hair damage by improving penetrability and persistence of the peptides, resulting in enhanced hair resilience and reduced breakage.

Implementation Method 1

combined with a hair-swelling organic solvent

Methodology Applied

Scientific EffectHair swelling:

Implementation Method 2

having penetrability into hair

Methodology Applied

Scientific EffectPenetration: Permeation

Data Source

PatentEP2194963B2Hair cosmetic composition

Publication Date: 2015.11.04 KAO CORP

AI summary

A hair cosmetic composition containing the following components (a) and (b) and a hair treatment method in which the hair cosmetic composition is applied to the hair: (a) one or two or more peptides each having the number of amino acid residues being 5 to 50, and having neither a sulfur-containing amino acid residue nor a derivative thereof; and (b) a hair-swelling organic solvent.