Silicon Resin Cosmetic Composition for Wear and Texture Balance
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Solution Overview
Problem
Cosmetic compositions, such as foundations and lipsticks, often fail to balance long-wear and transfer-resistance properties with good application properties like feel and texture.
Innovation Solution
Compositions comprising a silicon resin with a T unit, phenylated oil, and a gelling agent, preferably in an anhydrous stick form, which enhance stability, shine, and texture while providing improved wear and transfer-resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silicon resins such as MQ resins are used to provide long wear properties and transfer-resistance, then wear resistance is improved, but application properties and feel upon application deteriorate
Solution Approach 1:
The patent uses a composite resin system combining MQ resin with T unit-containing silicon resin (such as silsesquioxane). This composite approach allows the MQ resin to provide wear resistance while the T unit resin modifies the film properties to improve application feel and texture, resolving the contradiction between durability and applicability
Solution Approach 2:
The patent modifies the chemical composition parameters of the resin system by incorporating specific ratios of T units (at least 20 mol%) and adjusting molecular weight, crosslinking density, and hydroxyl content. These parameter changes enable the film to achieve both long-wear properties and pleasant application characteristics
2Duration of action of stationary object
If formulations are optimized for long-wear and transfer-resistance, then durability is improved, but texture and feel upon application worsen
Solution Approach 1:
The combination of MQ resin with T unit-containing silicon resin creates a composite film structure that maintains durability over time while improving immediate texture and feel. The T unit resin contributes to a more pleasant tactile experience during application without compromising the extended wear duration
3Reliability
If transfer-resistance is enhanced, then makeup longevity is improved, but application smoothness deteriorates
Solution Approach 1:
The patent adjusts critical parameters including the mol% of T units (at least 20%), molecular weight of the silicon resin (500-50,000 g/mol), and hydroxyl group content (2-10 wt%). These parameter optimizations enable the film to achieve high transfer-resistance while maintaining smooth application characteristics
Data Source
AI summary
The invention relates to a composition, especially a cosmetic composition, comprising at least one silicon resin comprising at least one T unit, at least one phenylated oil and at least one gelling agent, as well as to methods of using such compositions.