An emulsifier and co-surfactant. It blends oil with water and stabilizes the formula. Well tolerated.
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
A functional emulsifier. Safe.
Ceteareth-33 is a nonionic surfactant, an ethoxylated cetearyl alcohol. INCI: Ceteareth-33. In a formula it works as an emulsifier and stabilizer: it binds oil and water, helps keep the emulsion uniform, and improves cream texture. It is a functional component, not a skincare active. It is used in creams and emulsions. Pregnancy safety. Systemic absorption through intact skin is low and there is no evidence of harm. It can be used during pregnancy and lactation. Tolerance. Irritation and allergen potential are low. As with ethoxylated raw materials, the standard caveat about 1,4-dioxane removal in manufacturing applies.
Irritation potential
LowAllergen risk
LowPregnancy
SafeSuitable for
The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
Ceteareth-33 is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
Ceteareth-33 suits: normal, dry, combination, oily, sensitive.
An emulsifier and co-surfactant.
The INCI name is Ceteareth-33. It may also appear as: Цетеарет-33.
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