Anhydrous Cosmetic Spheroids in Silicone Phase
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Solution Overview
Problem
The cosmetics industry faces challenges in creating stable anhydrous compositions with solid spheroids dispersed in an immiscible continuous phase, particularly in maintaining spheroid integrity and preventing diffusion, especially when the continuous phase is translucent or transparent, which affects the stability and sensory properties of cosmetic products like lipsticks and foundations.
Innovation Solution
An anhydrous cosmetic composition featuring spheroids with a melting point above 50°C, composed of a cosmetically acceptable lipid matrix including hydrocarbon oils and waxes, dispersed in an immiscible silicone oil continuous phase, which ensures stability and easy application by maintaining spheroid shape and integrity while providing a sensory and visual effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If spheroids with low melting point are used, then the composition is easy to apply, but the spheroids lack hardness and deform easily
Solution Approach 1:
The patent applies parameter changes by selecting lipid materials with specific melting points above 50°C and controlling spheroid diameter within 0.1-10 mm range. This optimization of physical parameters ensures spheroids maintain sufficient hardness for shape retention while remaining soft enough for easy application when warmed by skin temperature
Solution Approach 2:
The patent uses composite lipid matrices containing multiple components (waxes, hydrocarbon oils, and optionally gelling agents) to create spheroids with optimized mechanical properties. The combination of different lipid materials provides both structural integrity and deformability for easy application
2Shape
If spheroids are made hard to retain shape, then shape integrity is maintained, but the spheroids become difficult to crush and apply
Solution Approach 1:
The patent optimizes the melting point parameter of lipid materials to be above 50°C, creating a temperature-dependent mechanical property system. At room temperature, spheroids are firm and maintain shape; at skin temperature, they soften and become easily deformable for application
3Illumination intensity
If the continuous phase is translucent or transparent, then visual appeal is enhanced, but diffusion of material into the continuous phase is immediately visible
Solution Approach 1:
The patent employs surfactants as intermediary substances at the interface between spheroids and the translucent continuous phase. These surfactants form protective layers that prevent material diffusion from spheroids into the continuous phase, maintaining both visual transparency and compositional stability
4Adaptability or versatility
If immiscible phases are associated, then unique sensory effects are achieved, but stability problems arise due to phase incompatibility
Solution Approach 1:
The patent uses surfactants as intermediary agents to stabilize the interface between immiscible phases (lipid spheroids and silicone oil continuous phase). This allows the system to maintain phase separation for unique sensory effects while preventing coalescence and separation issues
Solution Approach 2:
The patent creates a composite system combining lipid-based spheroids with silicone oil continuous phase, where each phase contributes distinct sensory properties. The composite structure maintains stability through careful selection of incompatible but complementary materials
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 stability and ease of application, enhancing sensory properties such as shine, hold, and comfort on the skin, with the spheroids and continuous phase mixing in situ to produce a uniform, attractive texture and visual effect.
Implementation Method 1
spheroids having a melting point above 50° C.
Implementation Method 2
the spheroids and the immiscible continuous phase in which they are dispersed mixing in situ
Data Source
AI summary
The invention relates to an anhydrous cosmetic composition comprising anhydrous spheroids having a diameter of 0.1 to 10 mm and having a melting point above 50° C., said spheroids consisting of a cosmetically acceptable lipid matrix, solid at room temperature, comprising:(a) at least one hydrocarbon oil, and optionally a gelling agent for said hydrocarbon oil, and/or(b) at least one wax, said spheroids being dispersed in an immiscible continuous phase comprising at least one silicone oil.More specifically, this cosmetic composition can be a lipstick or a foundation.