SEOUL 1988 Glow Serum: Niacinamide 15% + Yuja

K-SECRET pushes niacinamide to 15% here and matches it with yuja, the Korean citrus, for dullness, dark spots and uneven tone. Glutathione, squalane, macadamia oil and a set of humectants make that high dose easier to live with. The brand places it in the evening routine with sunscreen the next day, every other night at first when skin runs sensitive.