@stunskinapp: Vitamin C for skin: what is it doing? Acts as an antioxidant in skin: it neutralizes UV- and pollution-induced free radicals, supports collagen synthesis as a cofactor for proline/lysine hydroxylation, and can reduce hyperpigmentation by interfering with tyrosinase-driven melanin formation. Most people use it without really knowing what it’s doing. STUN scans your skin and helps you figure out what your skin actually needs. #VitaminC #Skincare #DarkSpots #Hyperpigmentation #GlowingSkin