Composite Powder for Natural Finish via Diffuse Reflection
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Solution Overview
Problem
Current cosmetic powders fail to effectively correct skin surface unevenness and imperfections in skin color while achieving a natural finish and durability, as they either produce excessive gloss or have insufficient hiding power, leading to an unnatural appearance.
Innovation Solution
A composite powder is developed by adhering barium sulfate or zinc oxide particles to the surface of flaky substrate powders, such as titanated mica, which generates interference colors, allowing for uniform correction of skin surface unevenness and imperfections, and providing a natural finish with improved durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If spherical resin powder with low refractive index is used to correct skin surface unevenness, then diffuse reflection is enhanced, but hiding power is insufficient and skin color imperfections remain visible
Solution Approach 1:
The patent combines spherical resin powder (for diffuse reflection) with flaky powder particles (for hiding power) into a composite structure. The spherical particles are attached to the surface of the flaky substrate, creating a hybrid powder that simultaneously provides both diffuse reflection for skin unevenness correction and sufficient hiding power for color imperfections.
Solution Approach 2:
The invention creates a composite powder material consisting of spherical resin particles (PMMA, nylon, or styrene-based) with refractive index 1.3-1.5 attached to flaky substrate particles (talc, mica, alumina, or barium sulfate). This composite structure integrates the optical benefits of spherical particles with the covering properties of flaky particles.
2Reliability
If titanium oxide pigment with high refractive index is used to correct skin color imperfections, then hiding power is improved, but gloss is lost and finished makeup appears pale and unnatural
Solution Approach 1:
The patent merges titanium oxide pigment particles with flaky powder particles into a composite structure. The titanium oxide particles are attached to the flaky substrate, creating a hybrid that maintains the gloss and natural finish of the flaky particles while providing the hiding power of titanium oxide for color correction.
Solution Approach 2:
The invention creates a composite powder combining titanium oxide particles (refractive index 2.69) with flaky substrate particles. This composite maintains the optical properties of the flaky particles for natural finish while utilizing the high hiding power of titanium oxide for correcting skin color imperfections.
3Illumination intensity
If flaky powder surface is covered with fine spherical resin powder to increase diffuse reflection, then blurring effect is improved, but strong gloss is produced and skin surface unevenness becomes more conspicuous
Solution Approach 1:
The patent applies local quality by controlling the distribution and arrangement of spherical particles on the flaky substrate. The spherical particles are attached to specific regions of the flaky particle surface, creating localized diffuse reflection zones while maintaining overall surface smoothness to avoid excessive gloss and preserve the blurring effect for skin unevenness correction.
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 composite powder effectively corrects skin surface imperfections and provides a natural, long-lasting finish by reducing surface reflection and enhancing diffuse reflection, resulting in a smooth application feel and improved cosmetic appearance.
Implementation Method 1
flaky substrate powders, such as titanated mica, which generates interference colors
Implementation Method 2
enhancing diffuse reflection, resulting in a smooth application feel
Data Source
AI summary
An object of the present invention is to provide a composite powder, cosmetics containing the same, and the production method of the same. When blended into cosmetics, the above-described composite powder corrects skin surface unevenness and imperfections in skin color, renders a natural finish, and have durability in finished makeup. In order to achieve the above-mentioned object, the composite powder of the present invention comprises flaky substrate powder and barium sulfate particles or zinc oxide particles that adhere to the surface, in protrusions, of the substrate powder.