Science
Mechanism of Action
Acting primarily as a solvent, Hydroxypropylene Carbonate efficiently solubilizes other formulation components, facilitating their uniform dispersion within the product. This not only aids in achieving desired viscosity and texture but also functions as a carrier, ensuring that ingredients are evenly distributed for consistent application and enhanced emulsion stability.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
As a liquid solvent, Hydroxypropylene Carbonate is not associated with dusting concerns common to powdered ingredients.
The Formula
Formulation
Stability
Aqueous solutions of Hydroxypropylene Carbonate are susceptible to hydrolysis when boiled, and thermal decomposition occurs at temperatures exceeding 200°C. Its stability is compromised in aqueous solutions containing acids, bases, or salts. Furthermore, it can react adversely with oxidizing materials.
Conflicts
- strong acids
- strong bases
- salts (in aqueous solution)
- oxidizing materials
Safety
Safety Profile
The CIR Expert Panel concluded that Hydroxypropylene Carbonate is safe for cosmetic use under current practices and concentrations, provided formulations are non-irritating. The highest reported concentration in leave-on skincare preparations (non-spray) is 17.9%. It is also utilized at up to 5% as an inactive component in FDA-approved topical drug formulations. While a photoallergic reaction was observed in 1 out of 25 subjects during a dermal photosensitization assay, this concern is mitigated by the ingredient's transparency in the UV region.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Hydroxypropylene Carbonate is a valuable formulating agent, effectively dissolving ingredients and controlling viscosity, with a favorable safety profile and broad skin compatibility.
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References
Sources