The SkinCeuticals Glass Skin Power Duo helps visibly refine the look of uneven texture and enhance luminosity, leaving skin looking smooth, hydrated and naturally radiant. Set Contents: SkinCeuticals P-TIOX Serum 30ml A peptide-rich formula that helps soften the look of fine lines while supporting a smoother, more luminous finish. SkinCeuticals Cell Cycle Catalyst 30ml An exfoliating treatment powered by a multi-acid complex to help gently exfoliate, while improving the appearance of uneven skin tone and texture.<br/>SkinCeuticals P-TIOX Serum: Step 1: Once or twice daily, apply 4-6 drops to the palm of the hand and dab onto forehead, cheeks, chin, and neck. Step 2: Blend the serum into skin. If using in the morning, apply after a SkinCeuticals vitamin C antioxidant serum and before a SkinCeuticals sunscreen. SkinCeuticals Cell Cycle Catalyst: Use once a day after cleansing. Apply 1/3 dropper with hands or a soaked cotton pad to a dry face. Use before SkinCeuticals serums and moisturisers. In the morning, apply a SkinCeuticals sunscreen.