Shampoo Oil Mixture Resolving Over-Conditioning and Turbidity
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Solution Overview
Problem
Conventional hair shampoos using anionic surfactants often cause damage to hair structures and scalp dehydration, leading to issues like split ends, hair breakage, and over-conditioning, especially with frequent use, and they also result in complex, opaque formulations due to the need for stabilizing excipients.
Innovation Solution
A hair cleaning agent combining anionic surfactants with a specific oil mixture comprising mono- and diesters of glycerol, vegetable oils, cationic guar polymers, and amidoamines, which provides excellent cleaning and care properties without the buildup effect, allowing for transparent and stable formulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If higher amounts of oil are added to provide conditioning benefits, then hair care properties improve, but hair becomes over-conditioned, greasy, and weighted
Solution Approach 1:
The patent changes the chemical parameters of the oil components by selecting specific types (light mineral oil, silicones with controlled viscosity, volatile oils) and controlling their concentrations within specific ranges (0.1-5% for mineral oil, 0.1-3% for silicones). This allows achieving conditioning benefits while avoiding over-conditioning through precise parameter control rather than simply reducing or increasing oil content broadly.
Solution Approach 2:
The patent creates a composite care system combining multiple types of oils (mineral oil, vegetable oil, silicone oil, volatile oil) with cationic polymers and surfactants. Each component serves a specific function: mineral oil provides baseline conditioning, vegetable oil adds natural care properties, silicone oil enhances smoothness, and volatile oils provide quick conditioning. The cationic polymers provide additional care while being compatible with the oil mixture. This composite approach allows achieving comprehensive care effects while avoiding the negative effects of any single oil type used in high amounts.
2Stability of the object's composition
If stabilizing excipients are incorporated to ensure oil stability, then formulation stability improves, but formulation becomes milky-turbid and complex
Solution Approach 1:
The patent changes the physical parameters of the oil components by selecting volatile oils that evaporate completely after application, and controlling the viscosity and molecular weight of silicone oils to ensure compatibility. These parameter selections inherently provide stability without requiring additional stabilizing excipients, thus maintaining formulation simplicity and transparency.
Solution Approach 2:
The patent extracts or eliminates the need for stabilizing excipients by carefully selecting oil components that are inherently stable and compatible with each other and with the surfactant system. By removing the requirement for thickening polymers and alkoxylated emulsifiers, the formulation remains transparent and less complex while maintaining stability.
3Productivity
If anionic surfactants are used for cleaning, then cleaning efficiency improves, but hair structure damage and scalp dehydration occur
Solution Approach 1:
The patent creates a composite surfactant system combining anionic surfactants (for cleaning efficiency) with cationic polymers (for hair care and damage prevention). The cationic polymers deposit on the hair surface during washing, forming a protective layer that prevents anionic surfactant penetration into the hair structure, thus maintaining cleaning efficiency while reducing damage. The oil mixture further complements this by providing immediate conditioning effects.
Solution Approach 2:
The cationic polymers and oil mixture act as intermediary substances between the anionic surfactants and the hair structure. They form a protective interface that allows the surfactants to clean the scalp and hair surface effectively while preventing direct contact with and damage to the hair keratin structure. This intermediary layer reduces surface tension and facilitates gentle cleaning.
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 solution ensures optimal balance between cleaning and care, improving hair gloss, volume, and softness while maintaining transparency and skin tolerance, eliminating the need for polymeric stabilizers and opaque emulsifiers.
Implementation Method 1
a care-active substance combination comprising a specific oil mixture, cationic guar polymers and amidoamines
Implementation Method 2
higher amounts of oil in shampoos must be stabilized with effort by the incorporation of excipients, such as special thickening polymers and/or alkoxylated nonionic emulsifiers
Data Source
AI summary
Hair cleaning agents and methods for improving the care properties of hair are provided. An exemplary hair cleaning agent contains anionic surfactant and a specific oil mixture. The oil mixture may include (i) at least one mono- and/or diester of glycerol and a saturated or unsaturated, branched or unbranched carboxylic acid having 18 to 30 carbon atoms, (ii) at least one vegetable oil, (iii) at least one cationic guar polymer, and (iv) at least one amidoamine of a selected formula.