A complex of peptides in a night serum to keep your skin looking youthful.| Do you feel like your face is getting more and more fine lines? Thanks to the high concentration of active ingredients, the activator serum for skin rejuvenation Klairs Midnight Blue Youth Activating Drop visibly reduces and smoothes them. While you sleep, it revitalizes the skin and fights aging. In the morning, you will wake up with fresh, hydrated and rejuvenated skin.