Triisostearin PEG-6 Esters

PEG / Ethoxylated

What is Triisostearin PEG-6 Esters?

Triisostearin PEG-6 Esters is a synthetic surfactant and emollient derived from esterifying triisostearin—a triglyceride of branched-chain isostearic fatty acids—with polyethylene glycol containing six ethylene oxide units. Isostearic acid originates from the isomerization of oleic acid, a common plant or animal-derived unsaturated fat. In cosmetics, it appears in moisturizers, cleansers, and makeup formulations. It functions by reducing surface tension for better spreading and mixing of oil and water phases, forming stable micelles for gentle cleansing, and providing a smooth, non-greasy feel. Its branched structure enhances solubility and mildness compared to linear fatty esters, supporting even distribution of active ingredients while mimicking skin's natural lipids to support barrier function without heaviness.

Comedogenic Rating 0/5 Low risk of clogging pores

EWG Safety Rating 3 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

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.

Surfactant

Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.

Emulsifying agent

Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.

Skin conditioning agent

Maintains skin softness, smoothness, and flexibility.

Benefits

Provides emollient effects to soften and smooth skin texture.

Acts as an emulsifier for stable, creamy product consistencies.

Supports surfactant action for effective yet mild cleansing.

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 normal to dry skin seeking smoother feel from lotions.	Those with known sensitivity to PEG compounds.
Users of emulsion-based products like creams and serums.	People preferring PEG-free formulations due to contamination concerns.
Individuals preferring non-comedogenic ingredients in daily routines.	Users with very reactive skin opting for simpler ingredient lists.

Safety Notes

Rated low hazard by EWG with score of 3, indicating moderate concerns mainly from potential impurities.
Generally recognized as safe in cosmetics when purified, per regulatory databases.

Frequently Asked Questions about Triisostearin PEG-6 Esters

What does Triisostearin PEG-6 Esters do in products?

It emulsifies oils and water, softens skin, and enables gentle cleansing for better texture and spreadability.

Is it safe for daily use?

It carries a low EWG hazard score of 3 and supports skin conditioning without high concerns in typical amounts.

Does it clog pores?

It has a comedogenic rating of 0, making it unlikely to contribute to pore blockages.