Silicone-Free Shampoo Composition Using Cationic Polymers
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Solution Overview
Problem
Existing shampoos often contain silicones, which have suboptimal environmental profiles, opaque appearances, insufficient foaming, and rapid re-greasing, leading to unpleasant hair feel and loss of volume and sheen, especially for sensitized and damaged hair.
Innovation Solution
A cosmetic composition comprising anionic surfactants, amphoteric surfactants, high cationic charge density cationic polymers, and non-oxyalkylenated liquid fatty substances, with a weight ratio of anionic to amphoteric surfactants less than or equal to 1, and the absence of silicones, resulting in a clear, transparent shampoo that improves hair softness, disentanglement, and conditioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If silicones are added to shampoo compositions, then cosmetic performance qualities such as softness and smoothness are improved, but environmental profile, appearance clarity, foaming quality, and hair volume are deteriorated
Solution Approach 1:
The patent removes silicones from the shampoo composition entirely, extracting the harmful component while maintaining effective hair conditioning through alternative cationic polymers and surfactant combinations. This eliminates the negative environmental and appearance effects associated with silicones while preserving the desired cosmetic benefits.
Solution Approach 2:
The patent modifies the chemical composition parameters by replacing silicone-based conditioners with specific cationic polymers (polyquaterniums) and adjusting the surfactant ratio (anionic to amphoteric ≤ 1:1). This parameter change achieves comparable or superior conditioning performance without the harmful effects of silicones.
2Object-generated harmful factors
If silicone-free compositions are used, then environmental profile and appearance clarity are improved, but foaming quality and hair conditioning are insufficient
Solution Approach 1:
The patent creates a composite formulation combining multiple surfactant types (anionic and amphoteric in balanced ratios) with cationic polymers and liquid fatty substances. This composite approach compensates for the absence of silicones by synergistically combining different functional ingredients to achieve superior foaming and conditioning performance.
Solution Approach 2:
The patent optimizes the concentration and ratio parameters of key ingredients: maintaining anionic to amphoteric surfactant ratio ≤ 1:1, using cationic polymers at 0.01-5% w/w, and incorporating liquid fatty substances at 0.1-10% w/w. These parameter adjustments ensure adequate foaming and conditioning without silicones.
3Ease of operation
If repeated applications of silicone-containing shampoos are made, then hair softness is maintained, but hair volume, liveliness, and sheen are lost
Solution Approach 1:
By removing silicones from the formulation, the patent eliminates the cause of volume loss and sheen deterioration that occurs with repeated silicone applications. The alternative cationic polymer-based system provides softness without the accumulating negative effects on hair structure and appearance.
Solution Approach 2:
The patent employs biodegradable, environmentally friendly ingredients that do not accumulate in the hair or environment. The cationic polymers and surfactants are designed to be rinsed away completely, preventing the buildup effects that cause loss of volume and sheen over time.
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 improved softness, suppleness, and smoothness to damaged hair, maintaining clarity and foaming quality, while avoiding silicones, thus enhancing hair health and styling ease without the drawbacks of traditional shampoos.
Implementation Method 1
comprising at least one anionic surfactant, at least one amphoteric surfactant, at least one cationic polymer with a high cationic charge density
Implementation Method 2
comprising at least one anionic surfactant, at least one amphoteric surfactant
Implementation Method 3
at least one liquid fatty substance chosen from certain fatty alcohols and fatty esters
Data Source
AI summary
Cosmetic composition comprising anionic surfactants, amphoteric surfac- tants, cationic polymers and liquid fatty substances chosen from fatty alco- hols and fatty esters, and cosmetic treatment process The present invention relates to a cosmetic composition, especially a hair compo- sition, comprising: -one or more anionic surfactants, -one or more amphoteric surfactants, -one or more cationic polymers with a high cationic charge density, -one or more liquid fatty substances chosen from non-oxyalkylenated fatty alco- hols and monocarboxylic fatty acid esters, and also mixtures thereof. The invention also relates to a cosmetic process for treating, and more particularly for washing and conditioning, keratin materials, especially the hair, using the pre- sent composition.