Water-Based Slurry Cosmetic Composition with Immobilized Pigments
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Solution Overview
Problem
Current liquid cosmetics and personal care products often exhibit issues such as a heavy or oily feel, uneven color, short wear, low spreadability, and skin adhesion problems due to the use of hydrophobic additives like oils and emollients, leading to undesirable skin interactions.
Innovation Solution
The development of water-based slurry compositions that incorporate pigments and substrates with chemically immobilized surface-treatment agents, which are dispersed in a water medium, enhancing adhesion and spreadability while reducing oiliness and creasing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrophobic additives (oils, emollients, emulsifiers, fats, hydrocarbons, waxes, paraffins) are used to establish resistance against sebum and sweat, then resistance against sebum and sweat is improved, but the cosmetic product exhibits heavy or oily feel and reduced skin adhesion
Solution Approach 1:
The patent changes the fundamental parameter of the continuous phase from hydrophobic (oil-based) to hydrophilic (water-based). This parameter change allows the formulation to maintain resistance against sebum and sweat through water-soluble binders and adhesion promoters while eliminating the heavy or oily feel associated with traditional hydrophobic additives. The water-based slurry composition uses alternative binding mechanisms that do not require oil-based emollients.
Solution Approach 2:
The patent introduces water-soluble binders and adhesion promoters as intermediary substances that mediate between the water-based continuous phase and the pigment/substrate particles. These intermediaries provide the necessary adhesion and resistance properties without requiring hydrophobic oils or emollients, thus resolving the contradiction between functionality and comfort.
2Reliability
If hydrophobic additives are used to establish resistance against sebum and sweat, then resistance against sebum and sweat is improved, but the cosmetic product exhibits low skin adhesion
Solution Approach 1:
The patent changes the chemical nature of the continuous phase from hydrophobic to hydrophilic, enabling the formulation to achieve skin adhesion through water-soluble adhesion promoters that form strong bonds with skin proteins and pigments. This parameter change allows simultaneous achievement of both resistance against sebum/sweat and improved skin adhesion, as water-based binders can penetrate and adhere to skin surfaces more effectively than oil-based additives.
3Reliability
If conventional liquid cosmetics are used, then resistance against sebum and sweat is established, but the product exhibits uneven color and short wear
Solution Approach 1:
The patent changes the formulation from conventional oil-based liquids to water-based slurry compositions with chemically immobilized surface treatment agents. This parameter change enables superior wear duration by creating a more stable adhesion between the cosmetic product and skin, while maintaining resistance against sebum and sweat through water-soluble binders that remain intact longer on the skin surface.
Solution Approach 2:
The patent applies surface treatment agents to the pigment and substrate particles before incorporating them into the water-based slurry composition. This preliminary action of chemically modifying the particle surfaces enhances their adhesion properties and stability, ensuring long-lasting wear and resistance against sebum and sweat throughout the product's duration of action.
4Reliability
If hydrophobic additives are used, then resistance against sebum and sweat is improved, but the product exhibits low spreadability
Solution Approach 1:
The patent changes the continuous phase from hydrophobic to hydrophilic, which improves spreadability by reducing the viscosity and improving the flow characteristics of the water-based slurry composition. The water-based formulation spreads more easily and uniformly on the skin surface while maintaining resistance against sebum and sweat through alternative binding mechanisms that do not compromise spreadability.
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 water-based slurry compositions provide a lighter, more natural appearance with improved skin adhesion, longer-lasting wear, and enhanced spreadability, offering a refreshing sensation and improved resistance to sebum and sweat.
Implementation Method 1
the pigment or substrate has a surface that has been chemically immobilized with at least one surface-treatment agent
Implementation Method 2
the pigment and substrate are dispersed in a water medium
Implementation Method 3
at least one surface-treatment agent (e.g., hydrophobic or hydrophilic)
Data Source
AI summary
Described are water based slurry compositions of cosmetic and personal care products and methods of making and using water based slurry compositions for cosmetic and personal care products such as foundations, eye shadows, lotions, and creams.