Aqueous Cleansing Composition for Colored Hair
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Solution Overview
Problem
Current cleansing compositions for colored hair fail to provide optimal foam properties, conditioning effects, and effectively retain color, leading to premature color washout and damage, especially for variably colored hair.
Innovation Solution
An aqueous cleansing composition comprising at least one mono ester anionic surfactant, one anionic amide surfactant, and an additional anionic surfactant, all without amphoteric surfactants, which enhances foam volume and creaminess while minimizing color washout, maintaining hair health and color longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional cleansing compositions with high surfactant content are used, then effective cleansing is achieved, but color washout increases and hair conditioning deteriorates
Solution Approach 1:
The patent changes the chemical parameters of the surfactant system by selecting specific anionic surfactants (mono ester type with C12-C15 chains and amide type with C12-C15 chains) and defining their precise concentration ranges (mono ester: 1-15%, amide: 1-15%, other anionic: 1-10%). This parameter optimization allows effective cleansing while reducing color washout and improving conditioning.
Solution Approach 2:
The patent creates a composite surfactant system combining three types of anionic surfactants (mono ester, amide, and other anionic) in specific ratios. This composite approach synergistically achieves effective cleansing, reduced color washout, and improved hair conditioning that cannot be obtained with single surfactant types.
2Object-affected harmful factors
If amphoteric surfactants are used to reduce color washout, then color durability improves, but foam properties and conditioning effects deteriorate
Solution Approach 1:
Instead of using amphoteric surfactants as previously done, the patent inverts the approach by exclusively using anionic surfactants (mono ester type and amide type) in optimized combinations. This inversion achieves the dual benefit of reducing color washout while maintaining excellent foam properties and conditioning effects, which amphoteric surfactants failed to provide.
3Object-affected harmful factors
If hydrophobic compositions are applied for color sealing, then color retention improves, but foam volume and creaminess deteriorate
Solution Approach 1:
The patent changes the surfactant composition parameters by selecting specific anionic surfactants with optimal hydrophilic-lipophilic balance (mono ester with C12-C15 chains and amide with C12-C15 chains) and optimizing their concentration ranges. This allows the formulation to provide color retention while maintaining high foam volume and creaminess, unlike hydrophobic compositions.
4Productivity
If high surfactant concentration is used for effective cleansing, then cleansing performance improves, but color durability and hair health deteriorate
Solution Approach 1:
The patent optimizes the concentration parameters of different surfactant types (mono ester: 1-15%, amide: 1-15%, other anionic: 1-10%) to achieve the optimal balance between cleansing performance and color durability. This parameter optimization ensures effective cleansing while minimizing color washout and maintaining hair health.
Solution Approach 2:
The patent employs a composite surfactant system combining three types of anionic surfactants in specific ratios. This composite approach provides synergistic effects that deliver high cleansing performance while reducing color washout and improving color durability, which cannot be achieved with single surfactant types 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 composition achieves excellent foam and conditioning properties, reducing color fading and washout, resulting in long-lasting color and healthy-looking hair.
Implementation Method 1
comprising at least one mono ester anionic surfactant, at least one anionic amide surfactant, at least one anionic surfactant which is different from the foregoing two surfactants
Implementation Method 2
provides excellent foam and conditioning properties
Implementation Method 3
interacts with dyestuff molecules and also with hair in a lesser extent
Implementation Method 4
Cleansing compositions wash out dirt on the hair
Data Source
AI summary
Present invention relates to an aqueous cleansing composition for keratin fibres, especially human hair, comprising at least one mono ester anionic surfactant, at least one anionic amide surfactant, at least one anionic surfactant which is different from the foregoing two surfactants and the composition is substantially free from amphoteric surfactant.