Cosmetic Silicone Particles for Sebum Absorption and Light Diffusion
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Solution Overview
Problem
Cosmetic compositions using silicone particles face issues such as heaviness, stickiness, oiliness, and oil film formation, along with alterations in make-up characteristics due to sebum, and inadequate sebum absorption leading to cosmetic transfer and color change.
Innovation Solution
Formulating cosmetic silicone particles with silicone rubber spherical particles covered by polyorganosilsesquioxane, specifying refractive index and particle size, and incorporating ethylhexyl methoxycinnamate for improved absorption and light diffusion effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cosmetic compositions use oily components and silicone oils, then skin protecting and softening effects are achieved, but heaviness, stickiness, and oil film formation occur
Solution Approach 1:
The patent uses crosslinked organopolysiloxane particles with a porous structure that can absorb and hold oily components within their three-dimensional network. This porous structure allows the particles to take up the harmful oily substances while maintaining skin protection functions, effectively separating the beneficial effects from the harmful sensations.
Solution Approach 2:
The invention creates a composite system combining crosslinked organopolysiloxane particles with specific oily components. The composite structure integrates the skin-protecting properties of silicone with the functional benefits of oils, while the particle formulation controls the release and distribution to prevent heaviness and stickiness.
2Quantity of substance
If sebum is adsorbed on particle surface, then some sebum absorption occurs, but absorption capacity is insufficient and cosmetic transfer occurs
Solution Approach 1:
The crosslinked organopolysiloxane particles possess a porous internal structure that enables deep sebum absorption throughout the particle bulk, not just surface adsorption. This increases the total sebum capacity while maintaining cosmetic adhesion through the crosslinked network structure that holds both the sebum and cosmetic formulation together.
3Ease of operation
If silicone particles are added for dryness and smoothness, then spreading and feel are improved, but make-up characteristics alter under sebum action
Solution Approach 1:
The patent formulates a composite system where crosslinked organopolysiloxane particles work synergistically with specific oily components to maintain make-up characteristics. The composite structure ensures that even when sebum is present, the formulation maintains its intended properties while providing improved spreading and smoothness.
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 formulation provides smooth spreading, skin penetration, and a pleasant feel, prevents cosmetic alterations, and reduces rough skin texture visibility by enhancing light diffusion and gradation effects.
Implementation Method 1
100 parts by weight of the cosmetic silicone particles absorb at least 100 parts by weight of ethylhexyl methoxycinnamate
Implementation Method 2
makes rough skin texture (like wrinkles and roughness) less noticeable by taking advantage of light diffusion or gradation effect
Data Source
AI summary
Silicone particles for cosmetics according to the present invention comprise 100 parts by mass of silicone rubber spherical particles and 0.5-25 parts by mass of a polyorganosilsesquioxane covering the surfaces thereof, and have a volume mean particle diameter of 0.5-100 μm. With respect to 100 parts by mass of said silicone particles for cosmetics, 100 parts by mass or more of ethylhexyl methoxycinnamate is absorbed.The refractive index of the silicone rubber spherical particles is 1.43-1.51.