Niacinamide vs Retinol: Which Should You Use First?
Search this question and you’ll get two confidently opposite answers. SkinCeuticals and La Roche-Posay say retinol goes first, directly onto clean skin. INKEY, DRMTLGY, and SeoulCeuticals say niacinamide goes first, to prime and buffer the skin before retinol. Both camps cite real skincare-science reasoning. Neither is wrong, exactly — they’re just optimizing for different things….