A lightweight, fast-absorbing serum from Kiehl's designed to target uneven tone and enlarged pores. The Ultra Pure High-Potency 5.0% Niacinamide formula feels non-greasy and suits combination to oily skin. Fragrance-free and easily layered under moisturizers, it’s aimed at users seeking clearer, calmer-looking skin with minimal residue.
Ingredient Safety
No risk4
Low risk6