Cosmetic Composition Using Segmented Titanium Dioxide Morphologies
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Solution Overview
Problem
Conventional cosmetic compositions with high titanium dioxide content improve coverability but compromise spreadability and sustainability, while reducing titanium dioxide content enhances spreadability at the cost of concealment power, failing to achieve a balance between these properties.
Innovation Solution
A cosmetic composition incorporating irregular titanium dioxide along with spherical or needle-shaped titanium dioxide, which improves spreadability and sustainability while maintaining high coverability by breaking agglomerates and ensuring even distribution of particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If titanium dioxide content is increased to improve coverability, then concealment power is improved, but spreadability deteriorates and the composition becomes stiff and agglomerated
Solution Approach 1:
The patent segments titanium dioxide into three distinct morphological types (irregular, spherical, and needle-shaped particles) with different size ranges. This segmentation allows each particle type to contribute differently to the overall performance: irregular particles provide coverage, spherical particles improve spreadability, and needle-shaped particles enhance sustainability, thereby resolving the contradiction between coverability and spreadability
Solution Approach 2:
The patent creates a composite particle system by combining three different titanium dioxide morphologies in specific weight ratios (irregular: 5-40%, spherical: 30-70%, needle-shaped: 10-40%). This composite approach synergistically combines the advantages of each particle type to achieve both high coverability and good spreadability simultaneously
2Ease of operation
If titanium dioxide content is decreased to improve spreadability, then spreadability is improved, but concealment power is significantly lowered
Solution Approach 1:
The patent segments the titanium dioxide content into functional roles assigned to different particle morphologies. Irregular particles (5-40% by weight) maintain concealment power, while spherical particles (30-70% by weight) provide spreadability. This functional segmentation allows the composition to achieve good spreadability without sacrificing concealment power
Solution Approach 2:
The patent changes the morphological parameters of titanium dioxide particles by introducing spherical and needle-shaped variants with specific size ranges. Spherical particles (200-400 nm diameter) improve spreadability, while needle-shaped particles (aspect ratio 10-15) enhance sustainability, allowing the system to maintain concealment power at lower overall titanium dioxide content
3Reliability
If formulation is applied thickly to cover skin blemishes, then coverability is improved, but the makeup does not fit the thin makeup trend and sustainability is reduced
Solution Approach 1:
The patent segments titanium dioxide into needle-shaped particles (aspect ratio 10-15) that provide exceptional sustainability and durability. These needle-shaped particles form a robust network structure that maintains makeup integrity over time, enabling thin application while achieving long-lasting wear and sustained coverage
Solution Approach 2:
The composite particle system creates a synergistic network where needle-shaped particles provide structural integrity and sustainability, spherical particles ensure even distribution and spreadability, and irregular particles deliver coverage. This composite structure enables thin application with sustained effectiveness
Data Source
AI summary
Provided is a cosmetic composition including irregular titanium dioxide, and any one or two selected from the group consisting of spherical titanium dioxide having an average particle diameter of 200-400 nm and needle-shaped titanium dioxide having an average aspect ratio of length/thickness of 10-15.