Biosurfactant Personal Care Composition for Stable Lipid Deposition
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Solution Overview
Problem
Existing personal care compositions face challenges with insufficient dispersibility, stability, and deposition of lipid layer enhancers, leading to increased skin roughness and transepidermal water loss, particularly when using surfactant-based rinse-off products.
Innovation Solution
A personal care composition combining glycolipid biosurfactants, preferably sophorolipids, with lipid layer enhancers such as esters of fatty acids with glycerol, specifically glycerol monooleate, to improve dispersibility, stability, and deposition on keratinous materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If surfactant-based rinse-off products are used for cleansing, then soil and dust removal is improved, but skin roughness and transepidermal water loss increase
Solution Approach 1:
The patent changes the chemical parameters of the cleansing system by using mild surfactants (alkyl polyglycosides with HLB 4-16) and lipid layer enhancers (glyceryl monooleate) instead of conventional harsh surfactants. This parameter change maintains cleansing efficiency while reducing skin roughness and transepidermal water loss by preserving the skin's natural lipid barrier.
Solution Approach 2:
The patent creates a composite formulation combining mild surfactants with lipid layer enhancers. The surfactant-lipid blend works synergistically where the surfactant provides cleansing and the lipid component replenishes skin lipids, counteracting the harmful effects of cleansing while maintaining cleaning performance.
2Reliability
If blend of surfactant and lipid compounds is used, then deposition of lipid layer is improved, but viscosity stability deteriorates
Solution Approach 1:
The patent optimizes the HLB parameter of the surfactant blend (targeting HLB 4-16 for alkyl polyglycosides) and controls the lipid-to-surfactant ratio to achieve stable emulsion formation. This parameter optimization ensures proper dispersibility of lipid compounds while maintaining viscosity stability during storage and application.
3Device complexity
If insufficient dispersibility of lipid enhancer is present, then formulation simplicity is maintained, but dispersing time increases
Solution Approach 1:
The patent selects lipid layer enhancers with appropriate molecular weight and structure (glyceryl monooleate) that exhibit good compatibility with mild surfactants. This parameter selection ensures spontaneous and uniform dispersion of the lipid enhancer in the surfactant base without requiring complex formulation procedures or extended dispersing time.
4Device complexity
If insufficient deposition of lipid layer enhancer occurs, then formulation simplicity is maintained, but conditioning benefits are reduced
Solution Approach 1:
The patent optimizes the concentration of lipid layer enhancer (glyceryl monooleate) in the formulation and adjusts the surfactant HLB value to enhance the deposition of lipid compounds onto keratinous materials. This parameter optimization ensures sufficient deposition for effective conditioning benefits while maintaining formulation simplicity and rinse-off functionality.
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 enhances the dispersibility and stability of the composition, leading to improved deposition of lipid layer enhancers on skin, reducing skin roughness and transepidermal water loss.
Implementation Method 1
a) a glycolipid biosurfactant, preferably sophorolipid biosurfactant
Implementation Method 2
improved deposition of lipid layer enhancer onto the keratinous materials, e.g. skin or hair
Data Source
AI summary
The present invention relates to a cosmetic composition at least comprising a biosurfactant and a lipid layer enhancer. The present invention relates to a method of enhancing or facilitating a deposition of lipid layer enhancer compound onto keratinous materials, such as hair or skin.