Ingredient
Oleyl Alcohol
Fatty alcohol · INCI: Oleyl Alcohol
How we read it
Highly comedogenic
A known pore-clogging ingredient. Avoid if you're acne-prone.
Why we read it this way
Flagged by an acne-safe list; reports are mixed and it's not consistently called out across sources.
The nuance
Most relevant in rich leave-on products on breakout-prone skin.