COLLECTION: ABC / 20% vitamin C optimized for radiant skin from 7 days. Dull, tired skin, unevenness, wrinkles. 20% Vitamin C optimized for radiant skin! This ultra-concentrated serum with optimized Vitamin C immediately recharges the skin to reveal a radiant complexion and reduce signs of fatigue. Day after day, the skin is in great shape: toned, luminous and even ???? ! And that's good for morale! After 1 application: +75%(1) toned skin After 7 days: +17% complexion luminosity(2) +18% complexion homogeneity(4) After 28 days: 90% of tired skin is revived(3) 97% of dull skin is energized(3) (1) DERMATOLOGICAL SCORE ON 30 SUBJECTS, IMMEDIATELY AFTER AN APPLICATION. (2) DERMATOLOGICAL SCORE ON 30 SUBJECTS AFTER 7 DAYS, APPLIED TWICE A DAY. (3) SELF-ASSESSMENT - 32 WOMEN - 28 DAYS - 2 APPLICATIONS PER DAY. (4) SELF-ASSESSMENT ON 30 SUBJECTS AFTER 7 DAYS, APPLICATION TWICE A DAY