What is Niacinamide?
Niacinamide is an active ingredient. Vitamin B3, an oil-regulating active rated 0/5. Non-comedogenic and often recommended for acne-prone skin.
You may see it on labels as Niacinamide, Nicotinamide, Vitamin B3, so it can hide under more than one name in an ingredient list.
Where Niacinamide shows up
You'll most often find Niacinamide in targeted treatment products. Separately from clogging, its irritancy is rated 0/5 — low, so it's unlikely to sting or sensitise on its own.
Is Niacinamide bad for acne-prone skin?
That low score makes Niacinamide a reasonable choice even for acne-prone skin. As always, individual reactions vary, but it is not a likely cause of clogged pores.