What is Stearyl Alcohol?
Chemically, Stearyl Alcohol is a fatty alcohol (a waxy conditioning ingredient, not a drying alcohol). A waxy fatty alcohol used to thicken creams, rated 2/5 and generally fungal-acne safe.
You may see it on labels as Stearyl Alcohol, Octadecan-1-Ol, so it can hide under more than one name in an ingredient list.
Where Stearyl Alcohol shows up
Stearyl Alcohol is commonly formulated into creams, conditioners, and lotions, where it thickens and softens. Separately from clogging, its irritancy is rated 2/5 — low, so it's unlikely to sting or sensitise on its own.
Is Stearyl Alcohol bad for acne-prone skin?
Because it barely registers on the comedogenic scale, Stearyl Alcohol is generally a safe pick for breakout-prone skin and is often recommended as a gentler alternative to heavier ingredients.