Hair Conditioner Lamellar Structure Bound Water
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Solution Overview
Problem
Existing hair treatment products lack formulations that provide a rich, creamy texture while maintaining good hair conditioning properties, as they often feel thin or watery and fail to improve combability and care of keratin fibers effectively.
Innovation Solution
A cosmetic preparation containing cationic surfactants like stearamidopropyl dimethylamine, behenamidopropyl dimethylamine, and/or palmitamidopropyltrimonium chloride, combined with fatty alcohols having a melting point above 35°C and lactic acid, achieving at least 50% interlamellar bound water, with a molar ratio of 10 to 20% cationic surfactants to surfactants and fatty compounds, enhancing the creamy texture and hair care properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional hair treatment products are formulated with cationic surfactants and fatty alcohols, then basic conditioning function is achieved, but the product feels thin or watery and lacks creamy texture
Solution Approach 1:
The patent changes the water binding parameters by introducing interlamellar-bound water phase with at least 50% proportion, measured by diffusion coefficient. This parameter change transforms the physical state of water from free-moving to bound within the lamellar structure, creating a creamy texture while maintaining spreadability
Solution Approach 2:
The patent creates a composite formulation combining cationic surfactants (stearamidopropyl dimethylamine, behenamidopropyl dimethylamine, and/or palmitamidopropyltrimonium chloride), fatty alcohols with melting point above 35°C, and lactic acid in specific ratios. This composite material forms a lamellar gel matrix that provides both creamy texture and good spreadability
2Shape
If the product is made thicker to improve creamy texture, then richness is enhanced, but hair conditioning properties and combability improvement may be compromised
Solution Approach 1:
The patent optimizes the cationic surfactant concentration to 0.1-5% by weight and fatty alcohol to 1-10% by weight, creating a lamellar structure that binds water effectively. This parameter optimization ensures the product feels rich and creamy while maintaining excellent hair conditioning properties and combability improvement
Solution Approach 2:
Lactic acid serves as an intermediary component in the formulation, working synergistically with the cationic surfactants and fatty alcohols to stabilize the lamellar structure. This intermediary role ensures both the creamy texture and effective hair conditioning performance are achieved simultaneously
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 formulation results in a very rich, creamy conditioner texture, improved spreadability, and enhanced combability, with a preferred interlamellar-bound water proportion of at least 60%, effectively addressing the shortcomings of prior art by providing better sensory properties and hair care performance.
Implementation Method 1
these form a lamellar gel matrix
Implementation Method 2
the proportion of interlamellar bound water is at least 50%; measured with 1H-NMR spectroscopy using the stimulated echo method
Data Source
AI summary
The invention relates to a cosmetic preparation for the treatment of keratinous fibers containing cationic surfactants, one or more fatty alcohols with a melting point above 35°C and lactic acid, and is characterized, among other things, by the fact that the proportion of interlamellar bound water is at least 50%, as measured by 1H-NMR diffusion measurements at 25°C.