PEG-3 Glyceryl Trioleate
INCI: PEG-3 GLYCERYL TRIOLEATE
Reviewed by Kate · Last updated 14 Aug 2026
Also known as: Peg-3 Glyceryl Trioleate
A lightweight emollient and emulsifier derived from plant oils
Best For Skin Types
All, Dry, Combination, Sensitive
Addresses
Usage Frequency
Daily
What Is PEG-3 Glyceryl Trioleate?
PEG-3 Glyceryl Trioleate is a synthetic emollient and emulsifying agent derived from glycerin and oleic acid (a naturally occurring fatty acid found in oils). The PEG prefix indicates it has been modified with polyethylene glycol, a water-soluble polymer that allows the ingredient to work effectively in both oil and water-based formulations.
In skincare products, it serves a dual purpose: it softens and conditions the skin barrier whilst helping to stabilise the texture and consistency of creams, serums and lotions. Its lighter molecular weight makes it suitable for products that need to feel non-greasy.
How It Works
PEG-3 Glyceryl Trioleate works by penetrating the uppermost layers of the skin and filling gaps between skin cells. This softens rough texture and reduces transepidermal water loss (TEWL), helping skin retain moisture more effectively.
As an emulsifier, it has both water-loving and oil-loving regions in its molecular structure, allowing oil and water to mix smoothly — which is why it appears in stable creams and serums that might otherwise separate.
Clinical Evidence & References
Published research specifically on PEG-3 Glyceryl Trioleate in isolation is limited. However, glyceryl trioleate compounds are well-documented as safe and effective emollients in cosmetic science literature, with a long history of use in skincare formulations.
The ingredient is generally recognised as mild and suitable for most skin types, though individual sensitivity to PEG-based ingredients can vary. Some individuals report that certain PEG derivatives may contribute to fungal acne breakouts, though this is not universal and remains an area of ongoing observation rather than established clinical consensus.
How to Use
PEG-3 Glyceryl Trioleate is a supporting ingredient rather than an active treatment, so it works best as part of a complete formulation rather than in isolation. No special application technique is needed — simply use products containing this ingredient as directed on the label, typically during your morning and evening routine as part of your moisturising step.
Safety & Precautions
Frequently Asked Questions
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Take the skin quizOther forms of PEG-3 Glyceryl Trioleate
These appear on ingredients lists under different names but are the same substance. PEG-3 Glyceryl Trioleate is the common form.
Related Ingredients
PEG-5 Glyceryl Trioleate
A synthetic emollient and emulsifier that softens skin and stabilises formulations
PEG-20 Stearate
A synthetic emulsifier that helps bind water and oil in skincare formulations
PEG-25 Castor Oil
A plant-derived emulsifier that helps blend oil and water-based ingredients in formulations
PEG-25 Moringa Glycerides
A plant-derived emollient and emulsifier derived from moringa oil
PEG-30 Dipolyhydroxystearate
An emulsifying agent that stabilises oil and water in skincare formulations
PEG-35 Castor Oil
A synthetic emulsifier derived from castor oil, used to blend oil and water in formulations
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