Acetylated Lanolin Alcohol
The AI Verdict
Acetylated Lanolin Alcohol has a comedogenic rating of 4 out of 5. It is a highly comedogenic emollient that is notoriously bad for acne-prone skin. It forms a thick, occlusive barrier that traps dead skin cells, bacteria, and sebum deep within the pores, leading directly to painful closed comedones and cystic acne.
Chemical Profile & Risk Factors
A chemically modified sheep-derived alcohol. Used heavily in thick face creams, foundations, and primers to create a "silky" feel. It is infamous for penetrating the hair follicle lining and causing hyperkeratinization (excess shedding of skin cells), which physically blocks the pore.
Highly occlusive and prone to causing microscopic congestion that turns into inflamed cystic acne over days or weeks of use. It essentially suffocation for the skin barrier.