Oil-in-water cleansing cosmetic composition
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Solution Overview
Problem
Existing oil-in-water cleansing cosmetic compositions face issues with slow blending with makeup grime, reduced stability, and lower makeup removing effectiveness due to phase inversion requirements and high oil content, leading to stickiness and inferior feel during use.
Innovation Solution
An oil-in-water cleansing cosmetic composition containing carboxylic acid-modified silicone, which is liquid at 50°C, along with 3 to 80% oil agent, water, and a basic compound, with limited ionic surfactant content, facilitating quick phase inversion to a water-in-oil type upon skin contact for enhanced stability and makeup removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high amount of oil is blended to facilitate phase inversion and improve makeup removing effect, then the makeup removing effectiveness is improved, but the stability and feel during use are reduced due to stickiness
Solution Approach 1:
The patent changes the chemical structure parameter of the silicone component by introducing carboxylic acid groups, which fundamentally alters the phase inversion behavior. This modification allows the composition to achieve rapid phase inversion at lower oil content, resolving the contradiction between makeup removing effectiveness and stability.
Solution Approach 2:
The patent creates a composite system combining carboxylic acid-modified silicone with specific oil agents and water in defined proportions. This composite approach enables the formulation to achieve both rapid phase inversion for effective makeup removal and maintained stability, avoiding the stickiness problem associated with high oil content formulations.
2Ease of operation
If an oil-in-water cleansing cosmetic composition is used to provide refreshing feel and reduce stickiness, then the feel during use is improved, but the makeup removing effect is lower compared to oil cleansing compositions
Solution Approach 1:
The patent introduces dynamic phase inversion capability to the oil-in-water composition. The formulation dynamically transforms from O/W to W/O type upon contact with skin and makeup, enabling it to adapt its properties during use. This dynamic behavior allows the composition to maintain refreshing feel initially while achieving effective makeup removal through phase inversion.
Solution Approach 2:
The patent modifies the chemical parameters of the silicone component by introducing carboxylic acid groups, which fundamentally changes the phase inversion behavior. This modification enables rapid phase inversion at lower oil content, resolving the contradiction between makeup removing effectiveness and stability.
3Reliability
If phase inversion is required for oil-in-water cleansing cosmetic composition to remove grime, then the mechanism can dissolve and disperse cosmetics and grime, but the process requires time and blends slowly with makeup grime
Solution Approach 1:
The patent changes the chemical structure parameter of the silicone component by introducing carboxylic acid groups, which fundamentally alters the phase inversion behavior. This modification allows the composition to achieve rapid phase inversion at lower oil content, resolving the contradiction between makeup removing effectiveness and 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 quickly blends with makeup, provides high makeup removing effectiveness, maintains stability without phase separation, and reduces stickiness, offering a refreshing feel during use.
Implementation Method 1
The oil-in-water cleansing cosmetic composition mixes with oily makeup grime by phase inverting from an O/W type to a W/O type due to water evaporation during rubbing to remove the grime
Implementation Method 2
phase inverting from an O/W type to a W/O type due to water evaporation during rubbing to remove the grime
Data Source
AI summary
Provided is an oil-in-water cleansing cosmetic composition. The oil-in-water cleansing cosmetic composition comprises: (A) carboxylic acid-modified silicone that is liquid at 50° C.; (B) 3 to 80 mass % of an oil agent relative to the total mass of the cosmetic composition; (C) water; and (D) a basic compound. An amount of an ionic surfactant other than the carboxylic acid-modified silicone (A) that is liquid at 50° C. is 10 mass % or less relative to the total mass of the cosmetic composition. In general, the oil-in-water cleansing cosmetic composition quickly blends with makeup grime, has a high makeup removing effect, and has excellent stability.