Water-in-Oil Cosmetic Emulsion with Silicone Elastomer Mattifying Filler
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cosmetic compositions that provide UV protection often feel oily due to UV agents, and adding oil-absorbing agents can compromise stability and reduce UV protection levels, making it challenging to create a stable, effective, and aesthetically pleasing product.
Innovation Solution
A leave-on water-in-oil cosmetic emulsion with a specific formulation including polyvinylpyrrolidone as the hydrophilic thickening agent, non-glycerylated silicone elastomer as the mattifying filler, octyl salicylate as the organic UV filter, and a high percentage of silicone oil, along with optional inorganic UV filters and preservatives, while minimizing other components to enhance stability and feel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UV agents (such as octocrylene, homosalate) are added to provide UV protection, then UV protection factor is improved, but the composition feels oily
Solution Approach 1:
The patent removes problematic UV agents (octocrylene, homosalate) that cause oily feel, and replaces them with alternative UV filters (octyl salicylate, titanium dioxide) that provide equivalent UV protection without the harmful oily sensation. This extraction of the disturbing component resolves the contradiction between UV protection and oily feel.
Solution Approach 2:
The patent changes the chemical parameters of the UV filtering system by substituting conventional organic UV filters with a combination of octyl salicylate and inorganic titanium dioxide. This parameter change in the UV filter composition maintains protection efficacy while eliminating the oily sensory defect.
2Object-generated harmful factors
If oil-absorbing agents are added to improve the feel, then aesthetic qualities are improved, but stability is negatively impacted and UV protection factor is reduced
Solution Approach 1:
The patent uses silicone elastomer particles that naturally provide both the desired matte aesthetic quality and simultaneously enhance formulation stability. Rather than adding separate oil-absorbing agents that compromise stability, the silicone elastomer converts the potential harm of oiliness into a beneficial matte finish while reinforcing emulsion stability through its unique rheological properties.
3Reliability
If multiple UV filters and cosmetic ingredients are combined to provide UV protection and improve feel, then UV protection factor and aesthetic qualities are improved, but the formulation becomes complex and stability is compromised
Solution Approach 1:
The patent merges multiple functions into a streamlined formulation by combining octyl salicylate and titanium dioxide as a synergistic UV filtering system, and integrating silicone elastomer to simultaneously provide matte finish and stability. This consolidation reduces formulation complexity compared to using multiple separate UV filters and oil-absorbing agents.
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 achieves a stable, non-greasy texture with effective UV protection, maintaining a reasonable SPF level and providing a soft, matte finish without compromising stability or aesthetic appeal.
Implementation Method 1
The cosmetic composition may include a mattifying filler. The mattifying filler may include a silicone elastomer
Implementation Method 2
The aqueous phase may include a hydrophilic thickening agent. The hydrophilic thickening agent may be polyvinylpyrrolidone (PVP)
Implementation Method 3
The cosmetic composition may include at least one silicone emulsifier
Implementation Method 4
The cosmetic composition may include an organic ultraviolet filter consisting of octyl salicylate. The cosmetic composition may include an inorganic UV filter, which is preferably UV-grade titanium dioxide
Data Source
AI summary
Disclosed is a leave-on water-in-oil cosmetic emulsion that includes an aqueous phase comprising water and a hydrophilic thickening agent consisting of polyvinylpyrrolidone, the aqueous phase being free of other hydrophilic thickening agents, a mattifying filler including a silicone elastomer, an organic ultraviolet filter consisting of octyl salicylate, at least one silicone oil, and at least one silicone emulsifier.