Self-Emulsified Cosmetic Composition for Surfactant-Free Stability
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Solution Overview
Problem
Conventional emulsion cosmetic compositions face instability issues when containing unstable active ingredients, leading to separation or precipitation, and high-content surfactants used for stability are environmentally unfriendly and harmful to the skin.
Innovation Solution
An emulsion cosmetic composition utilizing a self-emulsifying agent and a self-emulsifying stabilizer in the aqueous phase, along with an oil phase stabilizer, to achieve stability without surfactants, ensuring high interfacial stability between the aqueous and oil phases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If high-content surfactants are used to increase formulation stability, then emulsion stability is improved, but skin safety and environmental friendliness deteriorate
Solution Approach 1:
The invention extracts and removes harmful surfactants from the emulsion formulation while maintaining stability through alternative mechanisms using self-emulsifying agents and stabilizers that do not compromise skin safety or environmental friendliness
Solution Approach 2:
The invention introduces self-emulsifying agents and stabilizers as intermediary substances that mediate between the oil and aqueous phases, providing emulsion stability without the harmful effects of conventional surfactants
2Stability of the object's composition
If high-content surfactants are used to increase formulation stability, then emulsion stability is improved, but environmental friendliness deteriorates
Solution Approach 1:
The invention extracts and removes environmentally harmful surfactants from the formulation while maintaining emulsion stability through self-emulsifying agents and stabilizers that are environmentally benign
Solution Approach 2:
The invention converts the potential harm of using stabilizing agents into a benefit by selecting self-emulsifying agents and stabilizers that provide emulsion stability while being environmentally friendly, thus turning what could be a harmful compromise into a beneficial solution
3Device complexity
If conventional emulsion formulations are used with unstable active ingredients, then formulation complexity is reduced, but formulation stability deteriorates
Solution Approach 1:
The invention introduces self-emulsifying agents and stabilizers as intermediary substances that protect unstable active ingredients from degradation and precipitation, maintaining formulation stability without significantly increasing formulation complexity
Solution Approach 2:
The invention optimizes the concentration and selection of self-emulsifying agents and stabilizers to achieve maximum protection of unstable active ingredients while maintaining practical formulation complexity levels
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 exhibits excellent stability, environmental friendliness, and reduced skin irritation, with improved spreadability, makeup durability, and water resistance, while effectively stabilizing active ingredients like retinol.
Implementation Method 1
an aqueous phase containing a self-emulsifying agent and a self-emulsifying stabilizer; and an oil phase containing an oil phase stabilizer
Data Source
AI summary
The present invention relates to an emulsion cosmetic composition having excellent stability.