Triisostearyl Trilinoleate

What is Triisostearyl Trilinoleate?

Triisostearyl trilinoleate is a synthetic triester created by esterifying isostearyl alcohol—a branched, saturated alcohol from isostearic acid—with three molecules of linoleic acid, an omega-6 polyunsaturated fatty acid from plant sources like safflower oil. It falls into the emollient and skin conditioning category for cosmetics, appearing in products such as lipsticks, foundations, creams, and lotions. In formulations, it works by depositing a thin lubricating film on the skin, which fills minor surface irregularities for a smoother feel, enhances product spreadability, and prevents excessive tackiness. Its branched chains and unsaturated bonds contribute to lightweight occlusion, reducing water loss while maintaining a non-greasy finish, and it stabilizes emulsions by modifying flow properties for better consistency during application and storage.

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

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.

Benefits

Delivers softness and smoothness by mimicking skin's natural lipids.

Enhances product texture for easier spreading and comfortable wear.

Supports moisture retention through light emollience without greasiness.

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 conditioning without heaviness.
Those with rare allergies to fatty acid esters.
Users preferring non-comedogenic ingredients in makeup or lotions.
People sensitive to linoleic acid derivatives.
Individuals wanting stable, smooth-applying formulations.
Users avoiding synthetic emollients entirely.

Safety Notes

  • Considered low hazard in cosmetic concentrations by safety assessments.
  • Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Triisostearyl Trilinoleate

What is triisostearyl trilinoleate?

A synthetic ester from isostearyl alcohol and linoleic acid, used as an emollient in skincare and makeup.

Is it safe for daily use?

Yes, safety reviews indicate low hazard potential in typical cosmetic amounts.

Does it clog pores?

No, it has a comedogenic rating of zero.