POST-FILLER VITAMIN CBrand: Dermastir Origin: France Size: 4 x 4 ml The Dermastir Vitamin C Post Filler 25% of pure Vitamin C in solid form, a powerful and natural antioxidant that treats and prevents pigmentation and dark spots. Dermastir guarantees the stability of Vitamin C by presenting it in solid form in the Dermastir Post Filler with 25% Vitamin C. Vitamin C is the most powerful antioxidant for the skin, but also the most unstable ingredient. For this reason, Alta