Steareth-100

Steareth-100 is a high-ethoxylation stearyl alcohol PEG ether classified as a nonionic surfactant and co-emulsifier in formulations. It's used to support emulsion stability, improve solubilization of oils, and fine-tune viscosity in products.
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Ingredient Snapshot

Overview
An emulsifier that helps dissolve oils into water-based formulas.
Category
Emulsifying
Type
Emulsifier

Ingredient Ratings

Overall Rating

Great

Comedogenic Risk

None

Skin Benefits

It helps dissolve oily components into water-based bases for clearer, smoother textures, and can contribute to a richer feel without excessive heaviness.

Uses In Skincare & Cosmetics

It's used in rich moisturizers, cleansing balms, and SPF lotions where strong blending power is needed, and found in hair masks to create a creamy, stable base.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

It's considered safe in cosmetics when formulated appropriately, with typically low irritation and sensitization rates. Minor irritation is possible for highly sensitive or compromised skin, especially in higher-load systems.

Is Steareth-100 a Good Ingredient?

It earns a Great rating thanks to its high ethoxylation level, which delivers effective solubilization and co-emulsifying power with stable formulations, and a low tendency to irritate. It helps disperse oils and actives efficiently while remaining gentle for most skin types.

Products with Steareth-100

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