Glycol Stearate

Concerns
Malassezia Feeding

What is Glycol Stearate?

Glycol Stearate is the diester formed from stearic acid, a common saturated fatty acid from plant or animal sources, and ethylene glycol, a simple alcohol. Produced synthetically through esterification, it appears as a white, waxy solid with a mild odor. In cosmetics, it serves mainly in emulsions like lotions, creams, shampoos, and conditioners. It functions by creating a stable interface between oil and water phases, preventing separation and ensuring smooth textures. As an opacifier, it scatters light to give products a creamy, non-transparent appearance. Its emollient properties help soften skin surfaces, while surfactant action aids in cleansing and foaming. Typically used at low levels, it contributes to product stability and sensory appeal without altering pH significantly.

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.
Opacifying agent
Makes a formula less transparent to create a creamy, opaque look; can also help visually mask suspended particles and improve aesthetic uniformity.
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.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.
Surfactant
Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.

Benefits

Stabilizes emulsions to maintain consistent lotion and cream textures during use and storage.

Provides a creamy, opaque look that enhances visual appeal and masks imperfections.

Softens skin feel and supports moisture retention in formulations with other ingredients.

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 seeking stable, non-separating moisturizers and body washes.
Users prone to Malassezia-related skin issues like fungal acne.
Individuals preferring creamy, visually uniform shampoos and conditioners.
People with sensitivities to fatty acid esters in high-foaming products.
Those wanting smoother skin texture from daily rinse-off cleansers.
Individuals preferring fully transparent or minimalist formulations.

Safety Notes

  • Rated low hazard by environmental working groups based on available data.
  • Deemed safe for cosmetic use by expert review panels at typical concentrations.

Frequently Asked Questions about Glycol Stearate

What does Glycol Stearate do in skincare?

It emulsifies oils and water, opacifies products for a creamy look, and acts as a mild emollient.

Is Glycol Stearate safe for daily use?

Yes, it's considered low hazard and safe in cosmetics at common levels per safety reviews.

Does it affect fungal acne?

It may feed Malassezia, so those with related concerns might limit exposure.