Multilayer Cosmetic Composition Resolving Wear and Application Trade-off
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Solution Overview
Problem
Cosmetic compositions often fail to balance long-wear, transfer-resistance, comfort, shine, gloss, and matte properties, requiring multiple applications and compromising on application ease and feel.
Innovation Solution
A cosmetic composition forming a multilayer structure after application, comprising Component A with a silicone- and/or hydrocarbon-containing film-forming agent and Component B with high viscosity silicone compounds, allowing for a single-step application that separates into distinct layers for enhanced properties without initial phase separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silicone 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 become poor
Solution Approach 1:
The cosmetic composition is segmented into multiple phases (oil phase, water phase, emulsifying phase) that remain homogeneous in the bulk but separate into distinct layers after application. This allows different functional components to be distributed across layers, with wear-resistant ingredients in one layer and application-friendly ingredients in another layer, resolving the contradiction between wear resistance and application properties.
Solution Approach 2:
Different layers of the cosmetic composition are assigned different local qualities: the first layer provides wear resistance and transfer resistance, while the second layer provides smooth application and comfortable feel. This spatial differentiation of functions allows both wear resistance and good application properties to coexist in the same product.
2Reliability
If a single cosmetic composition is applied to achieve long wear, then wear resistance is improved, but application properties and feel deteriorate
Solution Approach 1:
The single cosmetic composition is designed with internally segregated phases that separate into functional layers after application. This segmentation allows the product to function as a unified composition during application (maintaining good application properties) while forming distinct functional layers afterward (providing long-wear properties), thus resolving the contradiction within a single product.
Solution Approach 2:
The composition utilizes parameter changes in the form of phase separation after application. The phases remain homogeneous during application but change their spatial distribution afterward, forming layers with different functional properties. This parameter change allows the same composition to provide both good application properties and long-wear properties.
3Reliability
If multiple cosmetic compositions are applied to achieve both wear resistance and good application properties, then both properties are improved, but the application process becomes complex
Solution Approach 1:
Multiple cosmetic compositions with different functions (wear-resistant composition and application-friendly composition) are merged into a single homogeneous cosmetic composition. The composition contains both functional phases internally, allowing users to apply a single product that subsequently forms multiple functional layers, thus eliminating the need for multi-step application while maintaining both wear resistance and good application properties.
Solution Approach 2:
The single cosmetic composition is designed to be multi-functional, containing both wear-resistant components and application-friendly components within the same formulation. This universal composition performs multiple functions (providing both durability and ease of application) that traditionally required separate products, simplifying the application process while achieving comprehensive performance.
4Reliability
If a cosmetic composition forms a multilayer structure after application, then both wear resistance and application properties are improved, but the composition must remain homogenous in the bulk
Solution Approach 1:
The cosmetic composition is prepared in advance with phases that are homogeneously distributed and stable during storage and application. The phase separation into functional layers occurs automatically after application under ambient conditions, without requiring user intervention. This preliminary homogenization followed by post-application separation resolves the contradiction between maintaining bulk homogeneity and forming functional layers.
Solution Approach 2:
The composition utilizes phase transitions that occur after application: the phases remain mixed and homogeneous in the bulk state during application, then transition to separated layers after application. This phase transition behavior allows the composition to maintain stability and homogeneity during handling while forming the desired multilayer structure for functional performance.
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 improved wear, feel, shine, and matte characteristics while maintaining transfer-resistance and comfort, eliminating the need for multiple applications and ensuring a homogenous bulk appearance before application.
Implementation Method 1
Component A which comprises about 0.01% to 50% by weight with respect to the total weight of the composition of at least one silicone- and/or hydrocarbon-containing film forming agent
Implementation Method 2
Component B which comprises about 0.01% to 90% by weight with respect to the total weight of the composition of one or more silicone compounds having a viscosity of greater than about 10 million cSt
Data Source
AI summary
Cosmetic compositions capable of forming a multilayer structure after application to a keratinous material are provided, as well as methods of applying such compositions to keratinous material. Certain compositions comprise:Component A which comprises about 0.01% to 50% by weight with respect to the total weight of the composition of at least one silicone- and/or hydrocarbon-containing film forming agent having at least one glass transition temperature which is lower than 60° C.;Component B which comprises about 0.01% to 90% by weight with respect to the total weight of the composition of one or more silicone compounds having a viscosity of greater than about 10 million cSt; andan inorganic pigment, skin active agent, skin adjuvant, or UV filter; wherein the weight ratio of the silicone- and/or hydrocarbon-containing film forming agent(s) in Component A to silicone compound(s) in Component B of about 1:1.5 to about 1:100.