Skin Care Composition Silky Texture High Glycerin
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Solution Overview
Problem
Topical moisturizers with high levels of glycerin and emollients often face challenges in achieving phase stability and a silky texture, leading to undesirable skin feel and tackiness, which consumers find unpreferable.
Innovation Solution
A skin care composition comprising a continuous phase with 45-85% water and 4-18% glycerin, a dispersed phase with 0.5-10% waxy emollients, 0.1-5% fatty alcohol, and 0.1-5% feel-modifying particles like siloxane or colloidal oatmeal, stabilized with 2% or less of cetearyl olivate and sorbitan olivate, ensuring phase stability and a smooth, non-tacky texture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high levels of glycerin and emollients are used in topical moisturizers, then moisturizing efficacy is improved, but skin feel becomes heavy and tacky
Solution Approach 1:
The patent changes the physical and chemical parameters of the emollient phase by using specific weight ratios (emollient to glycerin between 0.5:1 to 2:1) and selecting emollients with specific properties (waxy esters, fatty alcohols, plant butters). This parameter optimization allows high glycerin content (4-18%) while maintaining light, non-tacky skin feel through proper phase balance and viscosity control.
Solution Approach 2:
The patent uses composite emollient systems combining multiple ingredients (waxy esters, fatty alcohols, plant butters, mineral oils) in specific ratios. This composite approach creates a balanced emollient phase that provides effective moisturization without the undesirable heaviness and tackiness associated with single high-concentration emollients or glycerin.
2Reliability
If high levels of glycerin and emollients are used in topical moisturizers, then moisturizing efficacy is improved, but phase stability deteriorates
Solution Approach 1:
The patent optimizes the concentration parameters of glycerin (4-18%) and emollients (0.5-15%) within specific ranges, and controls their ratio (0.5:1 to 2:1). This parameter optimization prevents phase separation and instability that occur with excessive concentrations, while still achieving effective moisturization. The balanced composition ensures thermodynamic stability of the emulsion system.
3Reliability
If high levels of glycerin and emollients are used in topical moisturizers, then moisturizing efficacy is improved, but texture becomes non-silky
Solution Approach 1:
The patent controls the viscosity and texture parameters by optimizing the emollient to glycerin ratio (0.5:1 to 2:1) and selecting emollients with appropriate molecular weights and chain lengths. This creates a silky, smooth texture that absorbs quickly into the skin, contrasting with the heavy, tacky feel of unoptimized high-glycerin formulations.
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 effectively treats dry and irritated skin while maintaining a silky texture that absorbs quickly, providing long-lasting moisturization without the heaviness or tackiness typically associated with high-glycerin products.
Implementation Method 1
2 wt. % or less of an emulsifier comprising cetearyl olivate and sorbitan olivate
Implementation Method 2
2 wt. % or less of an emulsifier comprising cetearyl olivate and sorbitan olivate
Implementation Method 3
a continuous phase comprising water and glycerin, and a dispersed phase comprising at least two waxy emollients
Data Source
AI summary
A skin care composition is an emulsion having a continuous phase and a dispersed phase. The continuous phase includes water and glycerin. The dispersed phase includes at least two emollients. The composition also includes a feel modifying particle and an emulsifier. IN some examples, the feel modifying particle can include modified corn starch and colloidal oatmeal. The emulsifier is cetearyl olivate and sorbitan olivate. The composition can be used to soothe irritated skin; provide relief to itchy, dry, irritated skin; and/or moisturize and soften skin.