Steareth 10

What is Steareth 10?

A polyethylene glycol ether of stearyl alcohol with 10 moles of ethylene oxide, used as a nonionic emulsifier and solubilizer.

Why is it used in products?

It helps create stable oil-in-water emulsions and improves the compatibility of oil-soluble ingredients in water-based formulations.

Why does it clog pores?

Steareth 10 deposits stearyl alcohol-derived residues on skin that form an occlusive film over pore openings. Its moderate ethoxylation still leaves it lipophilic enough to penetrate into follicles. The stearic acid chain component creates a waxy layer that traps sebum and promotes comedones.

Commonly found in

• moisturizers
• lotions
• creams
• hair products