What it is
Polyglyceryl Oleate is a family of non-ionic emulsifiers formed by esterifying oleic acid with polyglycerol (a polymer of glycerin). The number suffix indicates how many glycerol units are linked together (e.g., Polyglyceryl-3 has three units). The polyglycerol portion provides hydrophilic character while the oleic acid chain provides lipophilic character, enabling the molecule to sit at the oil-water interface and stabilize emulsions. With an HLB value around 5, it is particularly effective for water-in-oil formulations. It imparts a smooth, spreadable texture to creams, lotions, and balms. Its non-ionic nature makes it gentle, well-tolerated by sensitive skin, and compatible with a wide range of cosmetic ingredients. It is COSMOS-compliant, vegan, and biodegradable, making it a popular choice in certified natural and organic cosmetics.
Safety & warnings
Polyglyceryl Oleate variants are generally considered safe for cosmetic use with low hazard scores on EWG Skin Deep. As a non-ionic emulsifier, it is less likely to cause irritation or sensitization than anionic surfactants. Some variants (e.g., Polyglyceryl-3 Oleate, Polyglyceryl-10 Oleate) carry EWG VERIFIED restrictions pending further substantiation. No significant comedogenicity concerns reported at typical use concentrations of 1–10%.
Origin & sourcing
Produced by the esterification of oleic acid (typically sourced from olive oil, sunflower oil, or high-oleic sunflower oil) with polyglycerol (derived from vegetable glycerin). The reaction links one or more oleic acid molecules to a chain of glycerol units. The resulting ingredient is 100% vegetable-derived and free of PEG and GMOs.
History
Polyglyceryl esters have been used as food-grade emulsifiers since the mid-20th century. They were adopted into cosmetic formulations as PEG-free, naturally derived alternatives to conventional emulsifiers. Various Polyglyceryl Oleate variants are listed in the EU CosIng database and approved for use in cosmetic products under EU Regulation 1223/2009.
Questions everyone asks
What does Polyglyceryl Oleate do in a skin care product?
It acts as an emulsifier, keeping oil and water phases blended together so creams and lotions stay uniform and do not separate. It also contributes to a smooth, spreadable texture.
Is Polyglyceryl Oleate natural or synthetic?
It is considered naturally derived. It is made from vegetable glycerin and plant-sourced oleic acid (from olive or sunflower oil) through an esterification process, and qualifies for use in COSMOS-certified natural and organic cosmetics.
Is Polyglyceryl Oleate safe for sensitive skin?
Yes. Its non-ionic nature makes it one of the gentler emulsifier options, with low potential for irritation or sensitization. It is frequently used in formulas designed for sensitive skin.
Are there different types of Polyglyceryl Oleate?
Yes. The family includes Polyglyceryl-2, -3, -4, -6, -8, and -10 Oleate, differing in the number of glycerol units in the polyglycerol backbone. Higher numbers generally produce more hydrophilic molecules with higher HLB values, affecting which emulsion type they best stabilize.