Water-in-Oil Hair Emulsion With Gelled Phase for Stable Combing
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Solution Overview
Problem
Existing cosmetic compositions in the form of water-in-oil emulsions for treating hair are not sufficiently efficient in improving combing and disentangling, often causing environmental harm or unpleasant sensory properties, and lack stability during storage.
Innovation Solution
A cosmetic composition comprising a gelled aqueous phase with crosslinked cationic polyelectrolytes and a specific emulsifying system, including alkylpolyglycosides and fatty alcohols, to create a stable water-in-oil emulsion that enhances hair manageability and combing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If oils are used alone to treat dry hair, then hair nourishment is improved, but product transfer to fingers, clothing and pillows increases and dust attraction worsens
Solution Approach 1:
The composition segments the treatment into distinct functional phases: a fatty phase for nourishment and a gelled aqueous phase for combing facilitation. This segmentation allows the oily components to be delivered in controlled amounts through the emulsion structure, reducing unwanted transfer while maintaining hair nourishment benefits
Solution Approach 2:
The gelled aqueous phase acts as an intermediary carrier that delivers the fatty phase components to the hair. The crosslinked cationic polyelectrolyte gel structure controls the release and distribution of oily substances, preventing direct application of pure oils and thereby reducing product transfer to fingers, clothing and pillows while minimizing dust attraction
2Quantity of substance
If water-in-oil emulsion is used to treat dry hair, then hair conditioning is improved, but storage stability deteriorates
Solution Approach 1:
The invention changes the physical-chemical parameters of the aqueous phase by introducing a gelling agent (crosslinked cationic polyelectrolyte) that transforms liquid water into a gel structure. This parameter change increases the viscosity and structural integrity of the continuous phase, preventing phase separation and improving storage stability of the water-in-oil emulsion while maintaining hair conditioning efficacy
Solution Approach 2:
The composition uses a composite gelling system combining crosslinked cationic polyelectrolytes with specific fatty phases. This composite material approach creates a synergistic effect where the polyelectrolyte network provides structural stability while the fatty phase delivers conditioning properties, resulting in a storage-stable emulsion that maintains its water-in-oil structure without separation
3Ease of operation
If conventional conditioners are used to improve combing, then ease of application is improved, but combing efficiency deteriorates
Solution Approach 1:
The invention applies local quality by creating a composition with non-uniform structure: a gelled aqueous phase providing ease of application and spreadability, combined with specific fatty phase components (including silicone derivatives) concentrated at the interface and hair surface where combing facilitation is needed. This local concentration of functional components ensures high combing efficiency while maintaining easy application properties
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 hair combing and disentangling while maintaining homogeneity at various temperatures and reducing environmental impact, offering a stable and effective treatment for dry and frizzy hair.
Implementation Method 1
comprising a gelled aqueous phase with crosslinked cationic polyelectrolytes
Implementation Method 2
create a stable water-in-oil emulsion
Implementation Method 3
including alkylpolyglycosides and fatty alcohols, to create a stable water-in-oil emulsion
Implementation Method 4
maintaining homogeneity at various temperatures
Implementation Method 5
crosslinked cationic polyelectrolytes... to enhance hair manageability and combing
Data Source
AI summary
Disclosed is a cosmetic composition which is in the form of an emulsion of water-in-oil type including, per 100% of its mass: from 60% to 95% by mass of a gelled aqueous phase including at least one crosslinked cationic polyelectrolyte; from 5% to 40% by mass of a fatty phase including at least one oil and an emulsifying system including a combination of at least one emulsifying surfactant selected from the elements of the group consisting of compositions of alkylpolyglycosides, compositions of alkylpolyglycosides and of fatty alcohols, polyglycerol esters, alkoxylated polyglycerol esters, polyglycol polyhydroxystearates, polyglycerol polyhydroxystearates, and alkoxylated polyglycerol polyhydroxystearates.