Snapshot
- Overview
- An emulsifier that helps dissolve oils into water-based formulas.
- Category
- Emulsifying
- Type
- Emulsifier
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.
Like this ingredient?
Our take
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.
What it does
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.
Where you'll find it
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.
Before you use it
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.
Products with Steareth-100
