Non-Solid Cosmetic Composition for Durable, Even Makeup Application
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Solution Overview
Problem
Existing cosmetic compositions with carboxylic acid-functional silicone elastomers have a difficult texture that is hard to apply and spread on the skin, leading to uneven coverage and discomfort.
Innovation Solution
A non-solid composition comprising an oily phase with apolar volatile hydrocarbon oil, a liquid hydrocarbon solvent with alcohol, carboxylic acid, amine, or amide function, and a carboxylic acid functional silicone elastomer, with a weight ratio of volatile oil to hydrocarbon solvent less than 20.0, providing a stable and flexible consistency for easy application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carboxylic acid-functional silicone elastomers are used in cosmetic compositions, then makeup durability and staying power are improved, but texture becomes difficult to apply and spread
Solution Approach 1:
The patent changes the physical state parameter from solid to non-solid (liquid or gel) formulation. This parameter change allows the silicone elastomer to maintain its durability properties while achieving a comfortable, easy-to-apply texture that spreads smoothly on skin. The non-solid state enables the product to be easily picked up and applied without the difficulty associated with solid formulations.
Solution Approach 2:
The patent creates a composite composition combining silicone elastomer with complementary ingredients in specific ratios. This composite approach maintains the durability benefits of silicone elastomer while the additional components work together to provide a comfortable texture and easy spreadability, resolving the contradiction between durability and ease of application.
2Reliability
If carboxylic acid-functional silicone elastomers are used to improve staying power, then makeup durability is improved, but consistency becomes difficult to spread on skin
Solution Approach 1:
The patent changes the physical state from solid to non-solid formulation, which fundamentally alters the spreading characteristics. This parameter change enables the product to flow and spread easily on skin while maintaining the staying power provided by the silicone elastomer, resolving the contradiction between staying power and ease of spreading.
Solution Approach 2:
The patent creates a homogeneous non-solid composition where the silicone elastomer is uniformly distributed with complementary ingredients. This local quality of homogeneity ensures consistent spreading behavior across the skin surface while maintaining the durability properties of the silicone elastomer.
3Adaptability or versatility
If volatile hydrocarbon oil and liquid hydrocarbon solvent are used in high ratios, then composition flexibility is improved, but stability deteriorates
Solution Approach 1:
The patent optimizes the ratio parameter of volatile hydrocarbon oil to liquid hydrocarbon solvent to be less than 20:1. This parameter optimization maintains composition stability by preventing excessive volatility and separation, while still providing sufficient flexibility and comfort in application. The optimized ratio balances stability and flexibility requirements.
Data Source
AI summary
The present invention relates to a non-solid composition for caring for and/or making up keratinous materials, in particular the skin, comprising, preferably in a physiologically acceptable medium:a) an oily phase comprisingi) at least one apolar volatile hydrocarbon oil H1 andii) at least one liquid hydrocarbon solvent with a molecular mass of less than 600 g/mol comprising at least one alcohol, carboxylic acid, amine or amide function and mixtures thereof; with the proviso that when the liquid hydrocarbon solvent is a primary alcohol, it comprises at least 3 carbon atoms, andb) at least one carboxylic acid functional silicone elastomer;the ratio by weight of the total amount of volatile oil(s) to the total amount of hydrocarbon liquid solvent(s) ii) being less than or equal to 20.0.The invention also relates to a process for coating keratinous materials, more particularly for making up and/or caring for keratinous materials, such as the skin, characterized in that it comprises the application to the keratinous materials of a composition as defined above.