What is Isopropyl Alcohol?
Chemically, Isopropyl Alcohol is a solvent. A drying alcohol rated 0 for clogging but 4/5 for irritancy.
You may see it on labels as Isopropyl Alcohol, Isopropanol, so it can hide under more than one name in an ingredient list.
Where Isopropyl Alcohol shows up
Isopropyl Alcohol is commonly formulated into toners, nail products, and cleansing formulas. Separately from clogging, its irritancy is rated 4/5 — high enough to be worth noting for sensitive skin.
Is Isopropyl Alcohol bad for acne-prone skin?
That low score makes Isopropyl Alcohol a reasonable choice even for acne-prone skin. As always, individual reactions vary, but it is not a likely cause of clogged pores.