Oil-Based Cosmetic Formulation for Matte Texture and Stability

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Solution Overview

Problem

Existing oil-based cosmetics with matte texture and stability issues due to limitations in crosslinked organopolysiloxane and amorphous silicic anhydride compositions.

Innovation Solution

An oil-based cosmetic formulation comprising a specific combination of crosslinked organopolysiloxane, amorphous silicic anhydride, an oil-based gelling agent with a sugar skeleton, liquid oil, and powder, optimizing the content ratios to achieve a matte texture and improved stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If conventional crosslinked organopolysiloxane and amorphous silicic anhydride are used, then the cosmetic provides some matte texture, but the matte texture quality and stability are insufficient

Engineering Contradiction:
Improvecosmetic stabilityVSAvoidmatte texture quality
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The patent changes the chemical parameters by introducing a crosslinked organopolysiloxane with specific structural characteristics (partially crosslinked structure with controlled crosslinking degree) and combines it with amorphous silicic anhydride in specific proportions. This parameter optimization resolves the contradiction by achieving both improved matte texture quality and enhanced cosmetic stability through precise compositional control.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite material system by combining crosslinked organopolysiloxane, amorphous silicic anhydride, and other cosmetic ingredients in specific ratios. This composite approach resolves the technical contradiction by synergistically combining the matte-forming properties of silicic anhydride with the stabilizing and texture-enhancing properties of crosslinked organopolysiloxane, achieving both high matte texture quality and product stability.

Inventive Principle:
Principle #40Composite materials

2Reliability

If the cosmetic formulation is optimized for matte texture, then the texture quality improves, but the stability and resistance to oil separation worsen

Engineering Contradiction:
Improvematte texture qualityVSAvoidresistance to oil separation
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent optimizes the crosslinking degree of the organopolysiloxane and the proportion of amorphous silicic anhydride to achieve a balance where the matte texture quality is maximized while the formulation maintains adequate stability. The specific parameter ranges disclosed ensure that the cosmetic resists oil separation while providing the desired matte finish.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The crosslinked organopolysiloxane acts as an intermediary substance that bridges the matte-forming silicic anhydride and the oil phase. This intermediary component ensures proper distribution and stabilization of the silicic anhydride particles, preventing oil separation while maintaining the matte texture effect.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS11638687B2Oil-based cosmetic preparation
Publication Date: 2023.05.02 SHISEIDO CO LTD

AI summary

The present invention provides an oil-based cosmetic which is excellent in terms of a matte texture, while being highly stable. An oil-based cosmetic which is characterized by containing the following components (a)-(e).(a) a crosslinked organopolysiloxane(b) an amorphous anhydrous silicic acid(c) an oil-based gelling agent having a sugar skeleton(d) a liquid oil(e) a powder.