W/O/W Emulsion Composition for Temperature-Stable Skin Absorption
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Solution Overview
Problem
Existing water-in-oil-in-water (W/O/W) emulsion cosmetic compositions face challenges in maintaining stability under varying temperature conditions and providing a balanced feel of use and moisturizing effect while effectively incorporating active ingredients.
Innovation Solution
A W/O/W emulsion cosmetic composition is formed by mixing an oil-in-water emulsion and a water-in-oil emulsion, comprising specific ratios of W/O and O/W emulsifiers, waxes, oils, and thickeners, with the active ingredient in the outermost water phase, to achieve stability and improved absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a W/O/W emulsion cosmetic composition is prepared, then excellent moisturizing effect and light refreshing feel are achieved, but emulsion stability decreases over time or with temperature changes
Solution Approach 1:
The patent divides the emulsion into distinct internal and external phases with specific compositions. The internal phase contains water, humectants, and active ingredients, while the external phase contains oil, emulsifiers, and stabilizing agents. This segmentation allows each phase to perform its specific function independently, maintaining overall emulsion stability despite temperature changes over time.
Solution Approach 2:
The patent uses a composite emulsion system combining water-in-oil and oil-in-water characteristics. By incorporating both hydrophilic and lipophilic components in specific ratios, the formulation creates a stable W/O/W structure that resists phase separation over time and temperature variations, achieving long-term reliability.
2Ease of operation
If O/W emulsion cosmetic composition is used, then light and refreshing feel is provided, but it is easily rubbed off with sweat or water
Solution Approach 1:
The patent creates a composite emulsion that combines the light feel of O/W emulsions with the sweat resistance of W/O emulsions. The specific combination of emulsifiers (both hydrophilic and lipophilic types) and the dual-phase structure provide both refreshing sensation and durability against sweat and water, resolving the contradiction between ease of use and reliability.
3Reliability
If W/O emulsion cosmetic composition is used, then excellent moisturizing effect and sweat resistance are provided, but heavy and greasy feel occurs
Solution Approach 1:
The patent applies local quality by having different phases with distinct properties. The external oil phase provides moisturizing and sweat resistance, while the internal water phase provides lightness and refreshing feel. This localized differentiation of functions within the emulsion structure allows simultaneous achievement of durability and pleasant feel of use.
Solution Approach 2:
By creating a composite W/O/W emulsion with specific phase ratios and component selections, the patent achieves both the moisturizing benefits of W/O emulsions and the light feel of O/W emulsions, eliminating the greasy sensation while maintaining sweat resistance and hydration.
4Reliability
If multi-emulsion type is prepared, then advantages of both O/W and W/O emulsions are achieved, but it is more difficult to form emulsion formulation and stability decreases
Solution Approach 1:
The patent segments the complex W/O/W formulation process into manageable steps with clearly defined phase compositions. By specifying exact ingredient ranges and preparation sequences for each phase, the patent simplifies manufacturing while achieving the combined benefits of both emulsion types with improved stability.
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 emulsion stability, a pleasant feel, and enhanced active ingredient absorption across varying temperatures, with improved skin improvement effects.
Implementation Method 1
a water-in-oil-in-water (W/O/W) emulsion cosmetic composition
Data Source
AI summary
Provided is a water-in-oil-in-water (W/O/W) emulsion cosmetic composition prepared by mixing an oil-in-water emulsion and a water-in-oil emulsion, wherein the W/O/W emulsion cosmetic composition has excellent feel of use and moisturizing feel while having excellent emulsion stability even under various temperature conditions, and has an excellent absorption rate of an active ingredient on the skin.