Oleyl Alcohol
Oleyl Alcohol is a long-chain unsaturated fatty alcohol derived from oleic acid, with the IUPAC name (Z)-Octadec-9-Enol and CAS # 143-28-2 / 593-47-5. It is used in cosmetic formulations primarily as an emollient, but also serves as a masking agent, perfuming agent, solvent, and viscosity controller. It appears across a wide range of product types including skincare, haircare, and lip products.
As an emollient, Oleyl Alcohol helps soften and smooth the skin by forming a conditioning layer on the surface. It also contributes to the texture and spreadability of formulations, and can act as a solvent to help dissolve or carry other ingredients.
Has a comedogenicity rating of 4 (out of 5), indicating a high likelihood of clogging pores; those prone to acne or breakouts should use products containing this ingredient with caution. Also carries an irritancy rating of 2.
