Mild Cosmetic Cleansing Agent Surfactant Mixture
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Solution Overview
Problem
Conventional mild cosmetic cleansing agents often compromise on skin tolerability, foam quality, and care properties, particularly for sensitive skin and hair, and fail to achieve a balance between mildness and foaming performance.
Innovation Solution
A cosmetic cleansing agent formulation incorporating a specific mixture of anionic surfactants, such as Sodium Cocoyl Isethionate and Sodium Lauroyl Methyl Isethionate, in a particular weight ratio, along with amphoteric surfactants like Cocamidopropyl Hydroxysultaine and alkyl glucosides, within an aqueous carrier, to enhance foaming and care properties while maintaining mildness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If alkyl ether sulfates are used to achieve excellent foaming performance, then foam quantity and quality are improved, but skin irritation potential increases and mildness decreases
Solution Approach 1:
The patent combines multiple surfactant types (acyl isethionates, zwitterionic surfactants, and alkyl ether sulfates) in a specific mixture ratio to achieve both high foam quantity and reduced skin irritation. The synergistic interaction between these surfactant classes allows the formulation to maintain excellent foaming performance while the milder acyl isethionates and zwitterionic components compensate for the irritation potential of alkyl ether sulfates.
Solution Approach 2:
The invention uses a composite surfactant system comprising at least one acyl isethionate, at least one zwitterionic surfactant, and optionally alkyl ether sulfates. This composite approach creates a balanced formulation where the different surfactant types work together to provide both high foam output and enhanced mildness, with the specific ratio controlling the overall performance characteristics.
2Object-affected harmful factors
If mild surfactant mixtures are used to reduce skin irritation, then skin tolerability is improved, but foam quantity and quality deteriorate
Solution Approach 1:
The patent merges acyl isethionates with zwitterionic surfactants and alkyl ether sulfates in a specific ratio range (acyl isethionate:zwitterionic surfactant = 1:0.5 to 5:1) to simultaneously achieve high foam quantity and reduced skin irritation. The acyl isethionates provide mildness and foam stability, while the zwitterionic surfactants enhance foam quality and the formulation maintains skin compatibility.
3Productivity
If conventional anionic surfactants are used to achieve good cleansing performance, then cleansing efficiency is improved, but skin tolerability and care properties deteriorate
Solution Approach 1:
The patent changes the chemical composition parameters by replacing conventional harsh anionic surfactants with a specific mixture of acyl isethionates, zwitterionic surfactants, and controlled amounts of alkyl ether sulfates. This parameter change maintains effective cleansing performance while significantly improving skin tolerability and care properties through the gentler surfactant chemistry.
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 formulation achieves high foaming performance comparable to alkyl ether sulfates while being gentler on the skin and hair, with improved care properties and reduced irritation potential, eliminating the need for additional sulfate-based surfactants.
Implementation Method 1
cosmetic cleansing agents are based on conventional anionic, amphoteric, zwitterionic, non-ionic and/or cationic surfactants
Implementation Method 2
the better skin tolerability thereof is often at the expense of the texture of the cleansing agents. Also disadvantageous are the often unsatisfactory foam amounts and foam properties
Data Source
AI summary
A particularly mild, highly foaming, and conditioning cosmetic cleansing agent includes, in a suitable carrier, a) at least one anionic surfactant according to the following formula (I), in which the radicals R2 to R5 each represent a hydrogen atom, and b) at least one anionic surfactant according to the following formula (I), in which at least one of the radicals R2 to R5 represents a C1-C4 alkyl radical and the other radicals independently of one another represent a hydrogen atom or a C1-C4 alkyl radical, wherein R1 in each case represents a linear or branched, saturated or unsaturated alkyl radical having 6 to 30 carbon atoms, and M+ in each case represents an ammonium cation, an alkanol ammonium cation or a metal cation.