Makeup Composition Dual Composite Powder Natural Gloss
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Solution Overview
Problem
Conventional makeup cosmetic compositions using pearl pigments with composite powders larger than 20 μm result in unnatural glossiness and whitening effects, as they enhance blue light reflection, leading to an unnatural skin tone appearance.
Innovation Solution
A makeup cosmetic composition combining two plate-like powders with specific coating layer thicknesses (20-70 nm and 74-104 nm) and refractive indices, optimized to provide uniform reflectance across visible light wavelengths, enhancing skin tone brightness while minimizing blue light emphasis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If composite powder with diameter of 20 μm or higher is used to impart shininess and glossiness, then glossiness is improved, but unnatural glossiness appears and skin becomes oily over time
Solution Approach 1:
The patent changes the particle size parameter from conventional 20 μm or higher to 1 μm or less, fundamentally altering the optical properties of the composite powder to achieve natural glossiness without the harmful effects of larger particles
Solution Approach 2:
The patent applies different coating layer thicknesses to different wavelength ranges: a first coating layer (20-70 nm) for blue-based wavelengths (400-500 nm) and a second coating layer (74-104 nm) for other visible wavelengths, creating localized optical properties that achieve uniform reflectance across the spectrum
2Illumination intensity
If composite powder with diameter of 20 μm or higher is used to implement whitening effect, then whitening effect is enhanced, but natural whitening effect is deteriorated due to interference effect of light
Solution Approach 1:
The patent changes the particle size parameter from conventional 20 μm or higher to 1 μm or less, eliminating the interference effect that causes unnatural whitening while maintaining the light-reflecting properties for natural whitening
Solution Approach 2:
The patent applies different coating layer thicknesses to different wavelength ranges to control reflectance locally: a first coating layer (20-70 nm) for blue-based wavelengths (400-500 nm) and a second coating layer (74-104 nm) for other visible wavelengths, achieving uniform natural whitening
3Illumination intensity
If pearl pigment coated with titanium oxide is used to implement white reflected light, then white reflected light is achieved, but high reflectance in blue light wavelength (400-500 nm) causes unnatural whitening effect
Solution Approach 1:
The patent applies different coating layer thicknesses to different wavelength ranges: a first coating layer (20-70 nm) for blue-based wavelengths (400-500 nm) to reduce excessive reflectance, and a second coating layer (74-104 nm) for other visible wavelengths, creating localized optical properties that achieve uniform reflectance across the spectrum
Solution Approach 2:
The patent uses a composite structure with a plate-like powder core and multiple coating layers with different thicknesses and refractive indices, creating a multi-layer composite material that controls light reflection across different wavelength ranges to achieve natural whitening
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 a natural whitening effect with improved skin tone brightness and uniform reflectance, reducing the unnatural appearance associated with conventional products.
Implementation Method 1
a first composite powder and a second composite powder, wherein the first composite powder and the second composite powder are plate-like powders coated in a coating layer
Implementation Method 2
due to the interference effect of light, each light may be reinforced to impart a whitening effect
Data Source
AI summary
A makeup cosmetic composition contains a first composite powder and a second composite powder, wherein the first composite powder and the second composite powder are plate-like powders coated in a coating layer. The first composite powder contains a coating layer having an average thickness of 20 to 70 nm, and the second composite powder contains a coating layer having an average thickness of 74 to 104 nm.