The Ordinary Niacinamide 10% + Zinc 1%
Apply before adapalene — reduces irritation, preps barrier
~$6
Apply after cleansing, wait 5–10 min before adapalene. Niacinamide reduces adapalene-induced irritation, strengthens barrier, controls sebum, and helps fade PIH. No negative interaction with adapalene — the combination is synergistic. Can also be used AM instead if preferred (niacinamide AM, adapalene PM only).