Shampoo Microemulsion Stabilizes Oil Bodies with Cationic Polymers
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Solution Overview
Problem
Existing cosmetic products fail to provide conditioning performance comparable to silicone-containing preparations, often resulting in rough and brittle skin and hair, especially after washing, and can cause issues during hair coloring and perming.
Innovation Solution
A cosmetic preparation comprising anionic, zwitterionic, or amphoteric surfactants, a specific microemulsion, and at least one cationic polymer, which stabilizes larger amounts of oil bodies synergistically, enhancing conditioning properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silicones are used as conditioning agents in shampoo compositions, then conditioning performance is improved, but harmful effects on hair occur including irreversible damage, negative effects on feel, and problems during coloring and perming
Solution Approach 1:
The patent extracts and eliminates silicones from the conditioning system, replacing them with a microemulsion-based formulation containing natural oils, waxes, and cationic polymers that provide conditioning effects without the harmful side effects associated with silicones
Solution Approach 2:
The patent employs biodegradable natural ingredients (oils, waxes, plant-based polymers) that are environmentally friendly and safe for hair, replacing persistent silicone compounds with temporary, natural conditioning agents that decompose harmlessly
2Reliability
If oils and waxes are used as conditioning agents, then some conditioning effect is achieved, but only cloudy formulations are possible and only small amounts can be stabilized
Solution Approach 1:
The patent introduces a microemulsion system as an intermediary that enables stable incorporation of large amounts of oil bodies while maintaining formulation clarity. The microemulsion structure acts as a mediator between the oil phase and aqueous phase, preventing phase separation and cloudiness
Solution Approach 2:
The patent creates a composite conditioning system combining microemulsion droplets containing oils and waxes with cationic polymers. This composite structure provides both the conditioning benefits of oils/waxes and the stability/clarity advantages of the microemulsion-polymer complex
3Reliability
If larger amounts of oil bodies are incorporated into the formulation, then conditioning performance is enhanced, but formulation stability deteriorates and cloudiness increases
Solution Approach 1:
The microemulsion system serves as an intermediary that stabilizes large amounts of oil bodies in the formulation. The surfactant-based microemulsion structure prevents oil droplet aggregation and phase separation, enabling high oil content without cloudiness or instability
Solution Approach 2:
The patent changes the physical state and distribution parameters of oil bodies by incorporating them into a microemulsion system. This transforms the oil from separate unstable phases into stabilized nanoscale droplets dispersed throughout the formulation, maintaining stability at high concentrations
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 combination achieves transparent and stable incorporation of oil bodies, providing superior conditioning performance that exceeds traditional silicones, as demonstrated by reduced residual combing work in hair treatment tests.
Implementation Method 1
a specific microemulsion... the transparent and stable incorporation of larger amounts of oil bodies is achieved, which are then stabilized synergistically with the cationic polymers of component (c) in the composition by the surfactants of component (a)
Implementation Method 2
the transparent and stable incorporation of larger amounts of oil bodies is achieved, which are then stabilized synergistically with the cationic polymers of component (c) in the composition by the surfactants of component (a)
Data Source
AI summary
The invention relates to a cosmetic preparation that contains (a) at least one surfactant selected from anionic, zwitterionic or amphoteric surfactants, (b) a microemulsion and (c) at least one cationic polymer.