Hydrophobic Silica Aerogel and Semi-Crystalline Polymer for Non-Tacky Lip Gloss
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid cosmetic compositions for the skin and lips, such as lip glosses, face challenges in achieving a stable, non-tacky, and non-migrating texture with optimal gloss and color retention, often relying on nanosilicas which can result in either insufficient thickening or excessive tackiness.
Innovation Solution
A liquid cosmetic composition combining hydrophobic silica aerogel particles and a semi-crystalline polymer with oils, maintaining less than 5% water content, to achieve a stable, easy-to-apply, and non-tacky texture that is neither too liquid nor too thick, ensuring good gloss and color remanence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If nanosilicas are used to thicken the composition, then the texture becomes stable and intermediate viscosity is achieved, but the composition becomes tacky and pasty
Solution Approach 1:
The patent changes the particle size parameter from nanometric (conventional nanosilicas) to micrometric (5-20 μm), and changes the material structure from dense to aerogel (ultra-low density with high porosity). This parameter transformation allows achieving thickening effect without the tackiness associated with conventional nanosilicas
Solution Approach 2:
The patent uses composite aerogel particles combining silica with organic compounds (silanes, silicones, waxes, oils) to create hydrophobic aerogels. This composite structure provides both thickening capability and anti-tackiness properties through the hydrophobic organic coating on the silica aerogel surface
2Illumination intensity
If large amounts of oils are used to optimize gloss effect, then the gloss and color remanence are improved, but the composition becomes too liquid and difficult to apply
Solution Approach 1:
The patent uses micrometric aerogel particles (5-20 μm) with ultra-low density (0.02-0.10 g/cm³) and high specific surface area (500-1500 m²/g) to provide efficient thickening of oils. This allows maintaining high oil content for gloss while achieving stable intermediate viscosity through the aerogel's unique structural parameters
Solution Approach 2:
The aerogel's highly porous structure (90-99% porosity) provides large surface area for oil interaction, enabling effective thickening and stabilization of the oily phase. The porous network traps and holds oils, preventing excessive fluidity while maintaining gloss properties
3Reliability
If the composition is thickened to prevent migration, then the remanence is improved, but the application becomes difficult and gloss decreases
Solution Approach 1:
The patent optimizes aerogel particle size to 5-20 μm and controls oil-absorbing capacity at 5-18 ml/g to achieve the right balance. This parameter optimization provides sufficient thickening for migration prevention while maintaining application ease through controlled viscosity and destructuring under shear
Solution Approach 2:
The composition exhibits dynamic rheological behavior with destructuring under shear stress during application, then restructuring after deposition. This allows easy application despite high thickening, as the structure temporarily breaks under shear then reforms to prevent migration and ensure remanence
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 provides a stable, homogeneous, and comfortable application with enhanced gloss retention, preventing migration and tackiness, while maintaining the cosmetic properties of pigments and nacres without phase separation or sedimentation.
Implementation Method 1
hydrophobic silica aerogel particles... to thicken the composition and to obtain a liquid (fluid) and stable texture
Implementation Method 2
it becomes very difficult to obtain a good compromise in terms of gelation of the oils
Implementation Method 3
at least one semi-crystalline polymer... stable, easy-to-apply, and non-tacky texture
Implementation Method 4
hydrophobic-treated... hydrophobic silica aerogel particles... comprising less than 5% by weight of water
Implementation Method 5
optimized gloss effect, generally by virtue of the presence of oils with a high refractive index
Data Source
AI summary
The present invention relates to a liquid cosmetic composition, preferably for making up and/or caring for the skin and/or the lips, comprising, in a physiologically acceptable medium, at least one fatty phase comprising: —at least one oil, which is preferably non-volatile, —at least hydrophobic silica aerogel particles, —at least one semi-crystalline polymer, —the said composition comprising less than 5% by weight of water relative to the total weight of the composition, and preferably being anhydrous.