High-Refractive-Index Polyol Cosmetic Composition for Sustained Gloss
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Solution Overview
Problem
Conventional water-in-oil type cosmetic compositions using high-refractive index oil result in a stuffy feel and reduced gloss sustainability due to thick makeup films and sebum collapse.
Innovation Solution
A water-in-oil type cosmetic composition incorporating high-refractive index oil and polyol in the internal phase, combined with an oil phase polymer, forms a moisturizing layer that enhances initial gloss and sustains gloss over time, reducing the stuffy feel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high-refractive index oil is used to achieve high gloss, then initial gloss is improved, but stuffy feel and thick makeup film are caused
Solution Approach 1:
The patent changes the refractive index parameter by introducing a high-refractive index polyol (RI ≥ 1.40) into the aqueous phase, allowing the formulation to achieve high gloss without relying solely on high-refractive index oil, thereby reducing the stuffy feel and thick film effects
Solution Approach 2:
The patent creates a composite system combining high-refractive index oil, high-refractive index polyol, and oil phase polymer in specific proportions (Oil: 5-20 wt%, Polyol: 5-20 wt%, Polymer: 1-10 wt%), achieving synergistic effects that provide high gloss while improving comfort and reducing makeup film thickness
2Reliability
If high-refractive index oil is used to provide water resistance and makeup sustainability, then water resistance is improved, but gloss collapse occurs over time
Solution Approach 1:
The patent incorporates a high-refractive index polyol in the aqueous phase that preliminarily forms a moisturizing layer on the skin surface, which prevents makeup film collapse and maintains gloss over time even when the external oil phase evaporates or breaks down
Solution Approach 2:
The high-refractive index polyol acts as an intermediary substance between the aqueous phase and the oil phase, creating a bridge that prevents direct interaction between water and oil while maintaining gloss through its high refractive index properties and moisturizing film formation
3Reliability
If oil phase polymer is added to prevent makeup collapse, then makeup film stability is improved, but feel of use and cosmetic effect are reduced
Solution Approach 1:
The patent optimizes the concentration parameter of the oil phase polymer within a specific range (1-10 wt%) and combines it with high-refractive index polyol, achieving sufficient film stability while minimizing the stuffy feel and maintaining cosmetic effectiveness
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 achieves improved gloss sustainability and comfort by using a high-refractive index polyol and oil phase polymer, minimizing the stuffy feel and maintaining gloss even after the makeup film collapses.
Implementation Method 1
a water-in-oil type cosmetic composition including high-refractive index oil and a high-refractive index polyol in its internal phase forms a moisturizing layer from the polyol in the internal phase
Implementation Method 2
An oil phase polymer may be added to a composition including such high-refractive index oil as a main ingredient to prevent collapse of makeup
Data Source
AI summary
The present disclosure relates to a gloss-sustainable cosmetic composition, which improves a stuffy feel of use, while including a high-refractive index oil, and provides improved skin gloss sustainability. The water-in-oil type cosmetic composition shows a reduced stuffy feel of use caused by high-refractive index oil, and provides significantly high initial gloss and gloss sustainability.