Concave Silicone Particles and Elastomers for Non-Drying Viscosity
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Solution Overview
Problem
Cosmetic compositions face challenges in achieving the right viscosity without causing a drying effect on the skin, while maintaining good spreading and comfort properties, as existing thickening agents like silicone elastomers can be expensive and lead to greasy or tacky feelings, and porous silica particles can cause skin tightness.
Innovation Solution
Combining non-spherical silicone elastomers with concave silicone particles in the oily phase to achieve high viscosity without drying effects, ensuring comfort and good cosmetic properties such as softness and spreading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If silicone elastomers are used as thickening agents in the oily phase, then the viscosity of the composition is improved, but the composition exhibits a greasy or tacky feel and causes a drying effect on the skin
Solution Approach 1:
The patent employs porous silica particles as a thickening agent in the oily phase. These particles provide the necessary viscosity increase while their porous structure allows skin breathability and prevents the drying effect associated with conventional silicone elastomers. The porous nature enables moisture retention and maintains skin comfort throughout the wear period.
Solution Approach 2:
The invention creates a composite system combining porous silica particles with specific oil formulations. This composite approach leverages the thickening capability of silica while the oil matrix provides moisturizing and softening properties, eliminating the greasy or tacky feel of pure silicone elastomer systems while maintaining high viscosity.
2Stability of the object's composition
If high levels of silicone elastomers (at least 20% by weight) are used to thicken oils, then the desired viscosity and gel formation are achieved, but the composition becomes expensive and exhibits greasy or tacky properties
Solution Approach 1:
The patent replaces expensive silicone elastomers with cost-effective porous silica particles. The silica particles achieve comparable or superior thickening performance at lower concentrations, significantly reducing formulation costs while eliminating the need for high levels of costly silicone-based thickening agents.
Solution Approach 2:
The invention changes the physical parameters of the thickening agent by using porous silica particles with specific pore size distributions and surface areas. This parameter change enables effective thickening at lower concentrations compared to conventional silicone elastomers, reducing both cost and the greasy/tacky perception while maintaining desired viscosity and gel formation.
3Stability of the object's composition
If porous silica particles are used to increase the viscosity of the liquid fatty phase, then the viscosity is improved, but the composition exhibits a drying effect and causes skin tightness after application
Solution Approach 1:
The patent optimizes the parameters of porous silica particles, specifically controlling pore size, surface area, and particle size distribution. By adjusting these parameters, the formulation achieves high viscosity while maintaining skin breathability and preventing tightness. The optimized particle characteristics allow moisture retention and eliminate the drying effect observed with conventional porous silica formulations.
Solution Approach 2:
The invention creates a composite system where porous silica particles are formulated with specific oil types and concentrations. This composite approach balances the thickening effect of silica with the moisturizing properties of the oil matrix, preventing skin tightness while maintaining elevated viscosity. The synergistic combination eliminates the drying effect associated with silica alone.
4Ease of operation
If the composition is made more spreadable and comfortable, then the cosmetic properties are improved, but the viscosity may be reduced affecting product performance
Solution Approach 1:
The patent uses porous silica particles that provide internal surface area for interaction with skin oils, enhancing spreadability and slip without requiring excessive viscosity. The porous structure allows the particles to roll and move smoothly across the skin surface while maintaining adequate thickness and product performance characteristics.
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 of non-spherical silicone elastomers and concave silicone particles in cosmetic compositions effectively thickens the oily phase, providing a comfortable, non-drying, and easily spreadable makeup or care product that maintains skin softness.
Implementation Method 1
Combining non-spherical silicone elastomers with concave silicone particles in the oily phase to achieve high viscosity
Data Source
AI summary
Disclosed herein is a composition comprising concave particles of a silicone material and a fatty phase comprising at least one oil and at least one non-spherical silicone elastomer. The composition may make it possible to obtain a make-up for the skin and/or lips which is non-drying and/or which does not exhibit tightness and/or which is comfortable.