Transparent Hair Conditioning Composition With Stable Low Viscosity
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Solution Overview
Problem
Existing cosmetic compositions containing an ionic complex of peptides or their derivatives and cationic surfactants suffer from insoluble matter precipitation and increased viscosity during storage, and fail to adequately impart softness and moistness to damaged hair.
Innovation Solution
A transparent liquid composition comprising an ionic complex of peptides or their derivatives, fatty acid amidoamine, gluconic acid and/or gluconolactone, and polyhydric alcohol, in specific mass ratios, which maintains low viscosity and stability without precipitation, enhancing softness, moistness, and smoothness when applied to hair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If an ionic complex of peptides and cationic surfactants is used to improve hydrophobicity and smoothness of hair, then sensory properties like smoothness and luster are improved, but insoluble matter precipitates and viscosity increases during storage
Solution Approach 1:
The patent introduces a specific intermediary substance (amino acid or peptide derivative with specific structural features) that acts as a mediator between the cationic surfactant and water. This intermediary maintains the ionic complex in solution, preventing precipitation of insoluble matter while preserving the hydrophobicity-enhancing effects on hair. The intermediary substance has specific structural characteristics that enable it to bridge the hydrophilic and hydrophobic components effectively.
Solution Approach 2:
The patent applies parameter changes by carefully controlling the molecular weight, structural features, and concentration ratios of the peptide/amino acid components in the ionic complex. By optimizing these parameters, the composition maintains low viscosity and prevents precipitation during storage while still providing the desired hair conditioning effects. The specific parameter ranges disclosed ensure stability without sacrificing performance.
2Stability of the object's composition
If an ionic complex of peptides and cationic surfactants is used to impart smoothness to hair, then smoothness and luster are improved, but the composition fails to adequately impart softness and moistness
Solution Approach 1:
The patent creates a composite material system by combining the ionic complex of peptides/amino acids with cationic surfactants in specific ratios and configurations. This composite structure provides multiple functions simultaneously: the peptide component contributes to softness and moistness through its amino acid composition, while the cationic surfactant provides smoothness and luster. The synergistic interaction of these components in a composite formulation achieves all desired sensory properties.
Solution Approach 2:
The patent applies local quality by designing the ionic complex with specific amino acid sequences and structural features that target different aspects of hair conditioning. Certain regions of the peptide structure are optimized for binding to hair keratin (providing softness), while other regions provide hydrophobicity (providing smoothness and moistness). This localized functional differentiation within the single ionic complex enables multiple sensory benefits from one composition.
3Stability of the object's composition
If the ionic complex is formulated to provide hydrophobicity to damaged hair, then sensory properties are improved, but handling performance during cosmetic production deteriorates due to high viscosity
Solution Approach 1:
The patent optimizes handling performance by carefully controlling physical-chemical parameters of the ionic complex, particularly the molecular weight distribution, concentration ratios, and structural configuration of the peptide/amino acid components. These parameter adjustments reduce intermolecular interactions that cause high viscosity, thereby improving fluidity and handling during cosmetic production while maintaining the hydrophobicity effect on hair through optimized functional group composition.
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 provides a uniform, low-viscosity liquid that imparts hydrophobicity to damaged hair, improving sensory properties like smoothness, moistness, and luster, while preventing insoluble matter precipitation and viscosity increase during storage, facilitating easy handling in cosmetic production.
Implementation Method 1
Peptides, which are protein hydrolysates, and their derivatives have strong adsorptive power to hair... an ionic complex of a peptide or its derivative having an acidic amino acid as a constituent amino acid and fatty acid amidoamine, which is a cationic surfactant, has a high adsorptive power to hair and has excellent effects of making the surface of the hair, which has become less hydrophobic due to damage, hydrophobic
Implementation Method 2
a composition containing an ion complex consisting of a peptide or a derivative thereof and a fatty acid amidoamine, which further contains gluconic acid and/or gluconolactone and a polyhydric alcohol in a specific mass ratio becomes a uniform liquid with low viscosity, and is stable without precipitation of insoluble (solids) even during storage
Data Source
AI summary
A transparent liquid composition is provided which has excellent handling properties when used in cosmetic production without causing increases in viscosity or precipitation of insoluble matter during storage, and which imparts hydrophobicity to damaged hair when added to a cosmetic, and is smooth, moist and soft so feels good during use; a cosmetic containing this transparent liquid composition is also provided. This transparent liquid composition is characterized by containing (A) a compound selected from a group consisting of peptides, amino acids and derivatives thereof, (B) fatty acid amidoamines, (C) gluconic acid and/or gluconolactones and (D) a polyhydric alcohol, wherein the mass ratio (C)/(B) of component (C) to component (B) is 0.5-2.0.