SkinCeuticals C E Ferulic Serum and P-TIOX Peptide Serum form a curated antioxidant and anti-ageing routine designed to target fine lines, expression wrinkles, dullness, uneven texture, and loss of firmness. C E Ferulic combines 15% pure Vitamin C, 1% Vitamin E, and 0.5% Ferulic Acid to provide advanced antioxidant protection while improving radiance, firmness, and visible signs of ageing. P-TIOX features an Advanced Peptide Complex with 5% PHA, 5% Niacinamide, and 1% Laminaria Extract to smooth expression lines, refine skin texture, and reveal glass-skin radiance. Used together, the duo provides complementary environmental protection and corrective care for smoother, firmer, brighter, and more youthful-looking skin.