ISDIN Melatonik, a restorative overnight serum-in-oil, redfines "beauty sleep" and helps skin recover from daily stresses that can lead to sun damage, fine lines and wrinkles and loss of firmness and elasticity. This vitamin C and melatonin serum also contains bakuchiol, stimulates natural antioxidant defenses and helps to restore vitality and elasticity for radiant, healthy skin.