That’s *The Ordinary Niacinamide 10% + Zinc 1%*, 30 mL/1 fl oz U.S. dropper bottle. *Short summary:* - *Use*: Water-based face serum for blemishes and congestion - *Key actives*: 10% Niacinamide (Vitamin B3) + 1% Zinc PCA - *Claim*: Reduces the appearance of skin blemishes, congestion, and enlarged pores while balancing visible sebum activity - *Texture*: Lightweight, watery serum that can feel slightly tacky before it sets - *Best for*: Oily, combination, or acne-prone skin dealing with shine and clogged pores Niacinamide brightens and strengthens the barrier, while zinc PCA helps regulate oil. It’s a cult favorite for oil control and post-acne marks. Use AM or PM after cleansing, before heavier creams. Don’t layer with pure Vitamin C in the same routine if your skin is sensitive.