Facial serum for oxygenated, healthy, and radiant skin. The formula of the Collistar Attivi Puri Vitamin C + Alfa-Arbutin serum contains the ideal amount of pure ethyl ascorbic acid, an ultra-stable next-generation derivative of vitamin C selected to ensure optimal results. To enhance its brightening power, it is combined with alpha-arbutin, which regulates melanin production. It revitalizes and evens the complexion, protects it against free radicals, and minimizes signs of fatigue. The water-based, oil-free texture is lightweight and hydrating, leaving the skin smooth and radiant.