Silicone Resin Lip Composition for Long Wear Without Stickiness
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Solution Overview
Problem
Current long wear lip compositions are often sticky, uncomfortable, and drying to the skin, and may spill due to their liquid nature, lacking stability and ease of application.
Innovation Solution
A cosmetic composition with low water content, comprising silicone resin and emulsifiers, providing a smooth, creamy texture and long-lasting wear without stickiness, while maintaining stability and ease of application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If long wear lip composition is used to extend wear time, then duration of action is improved, but the composition becomes sticky and uncomfortable
Solution Approach 1:
The patent changes the physical and chemical parameters of the lipstick composition by incorporating specific silicone resins (polyphenylsilsesquioxane and trimethylsiloxysilicate) and emulsifiers (PEG-18/PPG-18 dimethicone). These parameter changes modify the molecular structure and intermolecular forces within the composition, reducing stickiness while maintaining long wear time through enhanced film-forming properties and controlled adhesion to lips.
Solution Approach 2:
The patent creates a composite material system combining multiple silicone-based components (silicone resin, emulsifier, and auxiliary ingredients) in specific proportions. This composite approach allows the different materials to work synergistically - the silicone resin provides durability and water resistance, the emulsifier ensures smooth application and skin compatibility, and together they achieve long wear time without stickiness through their combined film-forming and lubricating properties.
2Ease of operation
If liquid lip composition is used for ease of application, then ease of operation is improved, but stability deteriorates due to spilling
Solution Approach 1:
The patent utilizes phase transition properties by formulating a composition that remains soft and pliable at application temperature (facilitating ease of application) but transitions to a more stable, set structure upon contact with lips. The silicone resin and emulsifier system enables this controlled phase behavior, allowing the lipstick to apply smoothly like a cream but set firmly to prevent spilling and maintain stability during wear.
3Illumination intensity
If traditional lip composition is used for color vibrancy, then color is improved, but skin drying occurs
Solution Approach 1:
The patent introduces silicone emulsifier and silicone resin as intermediary substances between the color pigments and the skin. These intermediary materials form a protective film that encapsulates the pigments, allowing vibrant color delivery while simultaneously preventing direct contact between drying traditional lip composition ingredients and the skin. The silicone-based intermediaries provide lubrication and skin compatibility, eliminating the drying effect while maintaining color intensity.
Data Source
AI summary
Provided is a cosmetic composition which includes at least one silicone resin and at least one emulsifier.