The Foxtale Vitamin C Serum Kit combines a 15% L-Ascorbic Acid and 1% Vitamin E brightening serum with a 0.15% Retinol night serum, each in a 10 ml bottle. This duo supports skin radiance by protecting against oxidative stress and enhancing collagen production during the day, while promoting cell renewal and improving texture overnight. Ideal for a balanced skincare routine targeting dullness and signs of aging with scientifically backed ingredients.