Acetylated Glycol Stearate

Concerns

Malassezia Feeding

What is Acetylated Glycol Stearate?

Acetylated Glycol Stearate is a synthetic lipid derived from stearic acid, a common fatty acid from vegetable oils, combined with ethylene glycol and acetyl groups through esterification. This creates a waxy, nonionic compound primarily used in rinse-off and leave-on skincare products like lotions, creams, and shampoos. It functions by lowering surface tension between oil and water phases, forming stable emulsions that resist separation. Additionally, it imparts a pearlescent sheen as an opacifier and enhances texture by thickening formulations. In skin conditioning roles, it mimics natural lipids to improve product spreadability and reduce evaporation from the skin surface, supporting a smoother application experience without heavy greasiness.

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:

Emulsion stabilizer

Improves emulsion robustness by preventing droplet coalescence and phase separation, often by thickening, structuring, or strengthening the interfacial layer.

Skin conditioning agent

Maintains skin softness, smoothness, and flexibility.

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

Helps create stable emulsions for consistent product texture and longevity.

Softens and smooths skin surface for better feel.

Supports skin flexibility by maintaining moisture barrier integrity.

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 seeking stable moisturizers without separation issues.	People prone to Malassezia-related issues like fungal acne.
Those with normal to dry skin needing mild softening effects.	Those sensitive to fatty acid derivatives.
Users of creamy or lotion formulas for everyday hydration.	Individuals preferring fully natural or minimal-ingredient products.

Safety Notes

Considered low hazard in cosmetic concentrations by safety assessments.
Monitor for fungal concerns in oily or acne-prone routines.

Frequently Asked Questions about Acetylated Glycol Stearate

What does Acetylated Glycol Stearate do in products?

It stabilizes oil-water mixtures, adds pearlescence, and softens skin feel.

Is it safe for daily skincare use?

Yes, at typical cosmetic levels, with low overall hazard ratings.

Does it contribute to acne?

No, it has a non-comedogenic rating of zero.