Cosmetic Composition Segregating Hydrophobic Colorants
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Solution Overview
Problem
Cosmetic compositions face challenges in providing both aesthetic and skin care benefits while maintaining stability and aesthetics, as the incorporation of various components can lead to stickiness, incompatibility, and mismatched appearance and benefits, affecting the application experience and stability.
Innovation Solution
A cosmetic composition comprising a continuous aqueous phase, a first dispersed non-aqueous phase with a hydrophobic colorant having a melting point between 27°C and 60°C, and a second dispersed non-aqueous phase free of hydrophobic colorants, where the second phase includes a lipophilic component incompatible with hydrophobic colorants, is prepared by creating separate non-aqueous phases and mixing them below the melting point to form a stable oil-in-water emulsion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple components are incorporated to provide both aesthetic and skin care benefits, then the functionality of the composition is improved, but the stability and aesthetics of the composition deteriorate due to incompatibility between components
Solution Approach 1:
The composition is divided into separate dispersed non-aqueous phases, with hydrophobic colorants segregated into specific phases distinct from phases containing lipophilic components. This segmentation prevents incompatible components from contacting each other, maintaining both functionality and stability.
Solution Approach 2:
Hydrophobic colorants are extracted from the continuous aqueous phase and isolated into separate dispersed non-aqueous phases. This extraction eliminates the incompatibility issue between hydrophobic colorants and certain lipophilic components while preserving the desired aesthetic and skin care benefits.
2Adaptability or versatility
If multiple components are incorporated to provide both aesthetic and skin care benefits, then the functionality of the composition is improved, but the application experience deteriorates due to increased stickiness
Solution Approach 1:
By segmenting the composition into distinct dispersed phases with incompatible components separated, the overall texture and application properties are improved. The segmentation prevents the formation of a sticky matrix while maintaining the functional benefits of all components.
3Illumination intensity
If hydrophobic colorants are incorporated into the composition, then the aesthetic benefits are improved, but the stability deteriorates due to migration and reaction with incompatible components
Solution Approach 1:
Hydrophobic colorants are segregated into specific dispersed non-aqueous phases that are physically separated from phases containing incompatible lipophilic components. This spatial segmentation prevents migration and chemical reactions, ensuring both coloration and stability.
Solution Approach 2:
Hydrophobic colorants are extracted from the continuous phase and isolated into separate dispersed phases, removing them from the chemical environment that would cause instability while preserving their color-providing function.
4Adaptability or versatility
If the composition is designed to provide both aesthetic and skin care benefits, then the versatility is improved, but the appearance mismatches the expected benefits, affecting consumer perception
Solution Approach 1:
Different dispersed phases are assigned specific local qualities: some phases contain hydrophobic colorants for aesthetic benefits, while other phases contain lipophilic components for skin care benefits. This local differentiation allows the composition to provide multiple benefits while maintaining an appearance that reflects its dual functionality.
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 satisfactory stability and aesthetics, preventing migration and reaction of hydrophobic colorants, ensuring long-lasting coloration and superior application experience without compromising stability or aesthetics.
Implementation Method 1
a first dispersed, non-aqueous phase being solid at room temperature, having a melting point from 27°C to 60°C, and comprising a hydrophobic colorant; and, a second dispersed, non-aqueous phase being distinct from the first non-aqueous phase, and being substantially free of a hydrophobic colorant
Implementation Method 2
mixing the aqueous phase and the second non-aqueous phase to obtain an oil-in-water emulsion
Data Source
AI summary
Cosmetic composition comprising a continuous aqueous phase, a first dispersed, non-aqueous phase comprising hydrophobic colorant and a second dispersed, non-aqueous phase being substantially free of hydrophobic colorant; a method for preparing this composition and its use thereof.