Trilinolenin

What is Trilinolenin?

Trilinolenin is a natural triglyceride formed by esterifying glycerol with three molecules of alpha-linolenic acid, an essential polyunsaturated omega-3 fatty acid sourced from botanical oils like flaxseed or chia seed. This lipid compound appears in moisturizers, lotions, creams, and lip care products within the cosmetics industry. It functions by closely resembling skin's own sebum components, delivering lightweight lubrication that enhances spreadability and sensory appeal. In formulations, it integrates into the oil phase to bolster emulsion stability, prevent phase separation, and optimize flow properties for smooth application. Its unsaturated structure provides flexibility to skin lipids, aiding surface leveling without residue, while supporting barrier integrity through compatible hydration.

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.

Benefits

Promotes skin softness and smoothness by mimicking natural lipids.

Enhances product viscosity for improved texture and even dispensing.

Restores lipid balance post-cleansing to minimize dryness.

Who It's For

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

Who May Benefit Who Should Avoid
People with dry or rough skin seeking emollient relief.
Those with rare allergies to linolenic acid sources like flax.
Individuals preferring botanical-derived conditioning agents.
People sensitive to unsaturated fatty acid triglycerides.
Users of wash-off products wanting reduced post-rinse tightness.
Individuals advised to patch test new lipids.

Safety Notes

  • Assessed as low hazard in cosmetic safety evaluations.
  • Non-comedogenic profile supports broad use including acne-prone skin.

Frequently Asked Questions about Trilinolenin

What is trilinolenin derived from?

It comes from plant oils rich in alpha-linolenic acid, such as flaxseed, forming a natural triglyceride.

Is trilinolenin suitable for sensitive skin?

Yes, it demonstrates low irritation potential and supports skin conditioning gently.

Does trilinolenin affect product texture?

It acts as a viscosity controller, improving stability, spread, and overall feel.