- High-potency facial serum with 5% niacinamide, developed by Kiehl's - Reduces shine, controls excess sebum, and improves skin texture - Helps diminish blemishes, redness, and skin irregularities - Minimalist formula: only 10 ingredients for maximum tolerance - Lightweight, non-greasy texture with fast absorption - Suitable for combination, oily, or blemish-prone skin - Daily use for more even, smooth, and calm skin - 30 ml format, ideal to integrate into your facial routine