Science
Mechanism of Action
This ester functions on multiple levels within a formulation and on the skin. As an emulsifier, it plays a critical role in stabilizing oil-in-water and water-in-oil mixtures, preventing separation and ensuring product integrity. Its surfactant properties reduce surface tension, enabling effective cleansing by suspending impurities for removal. Furthermore, it acts as an emollient, delivering skin-conditioning benefits by softening and smoothing the skin's surface, thereby improving overall skin feel and contributing to hydration.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Studies on related Polyglyceryl Fatty Acid Ester (PGFE)-based Nanostructured Lipid Carriers (NLCs) indicate non-cytotoxic concentrations as low as 0.5% in Caco-2 cells, signifying excellent biocompatibility.
- 02 General polyglycerol esters have been observed to cause no adverse effects at concentrations up to 5% (wt%) in cosmetic applications, confirming a robust safety profile.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
For optimal shelf-life and performance, this ingredient should be stored in airtight containers, shielded from light, moisture, and heat. It contributes positively to emulsion stability and exhibits tolerance across a range of pH and temperature conditions commonly found in cosmetic formulations.
Safety
Safety Profile
The Expert Panel for Cosmetic Ingredient Safety (CIR) has rigorously evaluated 274 polyglyceryl fatty acid esters, including Olive Oil Polyglyceryl-4 Esters, deeming them safe for use in cosmetics under current practices and concentrations, provided the final formulation is non-irritating. This ingredient class is characterized by its biodegradability, biocompatibility, non-carcinogenicity, and lack of toxicity, with no adverse effects observed at concentrations up to 5% by weight. While no definitive maximum concentration restriction is specified, safe use is contingent on maintaining a non-irritating final product.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Olive Oil Polyglyceryl-4 Esters is a valuable, multi-functional ingredient praised for its excellent safety profile, broad skin compatibility, and crucial role in enhancing both formulation stability and skin conditioning.
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