Sadoer Whitening Cream Dark Knuckle Niacinamide + Vitamin C 140G is a skin‑brightening cream formulated to reduce dark knuckles, pigmentation, and uneven skin tone. Enriched with niacinamide and vitamin C, it helps lighten dark areas, boost radiance, and improve overall skin texture. The nourishing formula also keeps the skin moisturized and soft with regular use