SkinCeuticals on Instagram: "P-TIOX includes an advanced peptide complex that works to fight against contraction lines. This breakthrough peptide serum produces enhanced penetration into the skin and therefore stimulates collagen across ALL skin tones. On its own, it reveals skin radiance in just 1 week, according to a 12-week clinical study with 75 subjects. This NEW breakthrough serum, efficiently reduces wrinkles that injectables can't tackle alone."