A nonionic surfactant and solubilizer. It dissolves oils and fragrances in the water phase and aids cleansing. Well tolerated.
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
A functional surfactant and solubilizer. Safe.
C12-13 Alketh-9 is a nonionic surfactant based on C12-13 fatty alcohols with a chain of nine ethylene-oxide units. INCI: C12-13 Alketh-9. In a formula it works as an emulsifier, solubilizer, and wetting agent: it binds oil and water, helps dissolve oils and fragrance, and improves texture. It is a functional component, not a skincare active. It is used in cleansers, emulsions, and clear formulas. 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.
C12-13 Alketh-9 is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
C12-13 Alketh-9 suits: normal, dry, combination, oily, sensitive.
A nonionic surfactant and solubilizer.
The INCI name is C12-13 Alketh-9. It may also appear as: C12-13 алкет-9.
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