Formulated with 70% vitamin-rich Sea Buckthorn fruit extract, 2% Niacinamide, and Vitamin C, this C-Niacin Toning Ampoule targets dull complexions. Revive and repair dull skin with Isntree C-Niacin Toning Ampoule from Isntree. This go-to treatment nourishes skin for a radiant, even complexion and can be used as a spot treatment for problem areas, or on the entire face. This concentrated ampoule with 70% sea buckthorn is rich in vitamin C and free radical-fighting antioxidants that help the skin to retain moisture, repair sun damage and blemishes, and boost collagen. At the same time, 2% niacinamide (a hardworking multitasker) works to brighten, smooth out fine lines and wrinkles, and strengthen the skin barrier, among other skin tone evening benefits.