Hubislab Vitamin-C Complex 50% Ampoule 50ml [Vitamin C based brightening formula] Vitamin C reduces discoloration, brightens the skin, and encourages collagen synthesis. It works well in conjunction with niacinamide to lighten the skin. [Skin lightening capability] Niacinamide lightens skin tone by preventing the formation of freckles and decreasing melanin production. [Sodium chondroitin sulfate for radiant, moisturized skin] Derived from natural mucopolysaccharides, this ingredient functions as a skin-softening and hydrating agent.