A non-ionic emulsifier. It stabilizes the formula and helps blend the oil and water phases. Well tolerated.
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
A functional emulsifier. Safe.
C20-40 Alketh-10 (INCI: C20-40 Alketh-10) is a nonionic emulsifier. It binds the oil and water phases and stabilizes the formula, which keeps creams and lotions from separating. This is a functional ingredient, not a skincare active. Its work is structural: keeping the emulsion stable. It gives no direct benefit to skin and should not be judged as a skincare active. Because of its topical use and lack of systemic relevance, it can be used during pregnancy and breastfeeding without concern. Tolerance is good. It is a mild surfactant, with low irritation and allergy potential, comfortable on sensitive skin. Most skin shows no reaction.
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.
C20-40 Alketh-10 is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
C20-40 Alketh-10 suits: normal, dry, combination, oily, sensitive.
A non-ionic emulsifier.
The INCI name is C20-40 Alketh-10. It may also appear as: C20-40 алкет-10.
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