20% Vitamin C optimized for radiant skin from 7 days.20% vitamin C in 30 ml, designed for glowing skin after 7 days. wrinkling, unevenness, and dull, lifeless skin. Optimised 20% Vitamin C for complexion! This highly concentrated serum recharges the skin instantly, revealing a radiant complexion and minimizing indications of exhaustion. It also contains enhanced Vitamin C. The skin looks fantastic every day: toned, radiant, and even! And that’s positive for spirits! Following one application, skin is toned by +75%(1). After 7 days: +17% brilliance of the complexion (2) +18% uniformity of the complexion (4) After 28 days, 97% of dull skin is rejuvenated and 90% of fatigued skin is revived(3) (3)