Triolein

Benefits
Hair GrowthRejuvenationAnti AgingMoisturizingSofteningNutrifyingHair Gloss

What is Triolein?

Triolein, chemically known as glyceryl trioleate, is a triglyceride formed by esterifying glycerol with three molecules of oleic acid, a monounsaturated fatty acid abundant in plant oils like olive, avocado, and sunflower. Naturally occurring in human sebum and various seed oils, it belongs to the lipid emollient category in cosmetics. In formulations, triolein functions by integrating into the skin's lipid matrix, promoting suppleness and reducing transepidermal water loss. It improves product texture as a viscosity modifier, aids in solubilizing actives as a solvent, and replenishes cleansing-depleted lipids via refatting. Commonly found in creams, lotions, serums, and hair conditioners, it enhances spreadability and provides a non-greasy feel, supporting overall product stability and sensory appeal across anhydrous and emulsified systems.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.
Emollient
Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.
Refatting
Replenishes lipids removed during cleansing to improve mildness and reduce tightness, leaving skin or hair feeling less stripped after rinse-off use.
Solvent
Dissolves and carries other ingredients, helping control viscosity, evaporation rate, and delivery of actives in both water- and oil-based systems.

Benefits

Supports skin moisturizing and softening for smoother texture.

Promotes hair gloss and nourishment for healthier appearance.

Assists in maintaining skin flexibility and replenishing lipids.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals with dry or rough skin seeking emollient effects.
Those with known allergies to oleic acid or related triglycerides.
People with dull hair looking for shine and conditioning.
Individuals sensitive to plant-derived oils.
Those desiring gentle, non-comedogenic hydration options.
Users preferring fully anhydrous-free formulations.

Safety Notes

  • Rated low hazard by EWG with scores of 1.
  • Deemed safe for cosmetic use by regulatory reviews.

Frequently Asked Questions about Triolein

What is triolein used for in skincare?

It serves as an emollient, skin conditioner, and viscosity controller to soften, hydrate, and improve product texture.

Is triolein safe for sensitive skin?

Yes, it carries a low EWG hazard score of 1 and shows minimal irritation potential in reviews.

Does triolein benefit hair?

It helps provide gloss, nourishment, and conditioning for smoother, shinier hair.