Tresemme Keratin Smooth Shampoo 1LDESCRIPTIONS & HOW TO USEOur Keratin Smooth system, infused with KERATIN and light weight ARGON OIL, nourishes your hair & control frizz, for up to 3 days.Dual action, 200% smoother hair with more shineHow to use: apply to wet hair. Gently massage and work into a lather. Rinse thoroughly. For extra boost of smoothness, follow with Keratin Smooth Conditioner everytime.