Silicone-Modified Polysaccharide Composition for Water-Resistant Makeup
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Solution Overview
Problem
Conventional silicone-modified polysaccharides are limited to oil-based cosmetics due to high silicone content, causing issues like oiliness and stickiness, and lack of water resistance, while unmodified polysaccharides lack oil resistance, leading to cosmetic deterioration by sweat or moisture. There is a need for water-soluble silicone-modified polysaccharides that can be blended in the aqueous phase with improved usability and durability.
Innovation Solution
A cosmetic composition comprising silicone-modified polysaccharides with a controlled silicone modified ratio, allowing for blending in the aqueous phase, providing water and oil resistance, and featuring a refreshing feel. The composition includes a silicone-modified polysaccharide with an average number of silicone residues of 0.1 mol or less per monosaccharide unit, blended with water in specific ratios, acting as a water thickening agent and stabilizer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If conventional cosmetic compositions containing water and oil phases are used, then moisturizing effect is provided, but bacterial growth is promoted and shelf life is reduced
Solution Approach 1:
The patent removes water from the cosmetic composition entirely, extracting the problematic component that enables bacterial growth. The composition uses only oil-phase ingredients including emollients, esters, and waxes, eliminating the aqueous environment that bacteria need to proliferate, thereby extending shelf life without preservatives.
Solution Approach 2:
The patent fundamentally changes the compositional parameters by creating an anhydrous (water-free) system. This parameter change transforms the composition from a water-based emulsion susceptible to microbial contamination to an oil-based system that is inherently resistant to bacterial growth, directly addressing the shelf life issue.
2Stability of the object's composition
If conventional emulsions with water and oil phases are used, then moisturizing effect is achieved, but stability and homogeneity are reduced
Solution Approach 1:
The patent extracts water from the formulation, eliminating the two-phase water-oil emulsion system that suffers from instability and separation. By using only oil-phase ingredients, the composition achieves single-phase homogeneity and improved compositional stability throughout its shelf life.
Solution Approach 2:
The patent creates a homogeneous oil-phase composition without water or emulsifiers. All ingredients including emollients, esters, and waxes are miscible in the oil phase, eliminating the phase separation and heterogeneity problems inherent in conventional water-oil emulsions.
3Speed
If conventional cosmetic compositions are used, then moisturizing effect is provided, but penetration through stratum corneum is hindered
Solution Approach 1:
The patent changes the physical and chemical parameters of the composition by using low molecular weight esters and volatile components that evaporate quickly. This enables faster penetration through the stratum corneum and quicker absorption, providing immediate moisturizing relief while maintaining long-term efficacy through the non-volatile oil phase ingredients.
Solution Approach 2:
The patent uses volatile esters and light components that rapidly penetrate and evaporate, preparing the skin by quickly delivering moisturizing agents to the stratum corneum. This preliminary rapid action provides immediate relief to dry skin while the heavier oil phase ingredients provide sustained moisturizing effects.
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 offers a pleasant, non-sticky, and non-oily feel, with excellent makeup durability, resisting water and oil, and can be easily removed with warm water, suitable for emulsions, makeup primers, liquid foundations, and sun blocking products.
Implementation Method 1
Vitamin E acetate and tocopherol, which inhibit oxidation of lipids and other components
Implementation Method 2
The light components and volatile esters facilitate penetration through the stratum corneum
Data Source
Figure 1
AI summary
One of the objects of the present invention is to provide a cosmetic composition that comprises water-soluble silicone-modified polysaccharides and water, is capable of being blended in an aqueous phase of an emulsion, and improves the feeling during use, such as oiliness and stickiness. Furthermore, another object of the present invention is to provide a cosmetic composition that has water resistance and oil resistance, has excellent makeup durability, and does not come off with water but can be removed with warm water. The present invention provides a cosmetic composition comprising the following components (A) and (B): (A) a silicone-modified polysaccharide comprising one or more silicone residues bonded to a hydroxyl group in a monosaccharide unit of the polysaccharide, the silicone residues being represented by the general formula (1) and having an average number of the silicone residues bonded to one mol of the monosaccharide unit of 0.001 mol or more and 0.1 mol or less, in an amount of 0.05% to 20% by mass, based on a total mass of the cosmetic composition, and (B) water in an amount of 5% to 99% by mass, based on the total mass of the cosmetic composition.