Question: what is the best keratin shampoo?
Answer:  Tresemme Keratin Smooth 7 Day Smooth System. ... ,  Kerastase Discipline Bain Fluidealiste. ... ,  Keranique Scalp Stimulating Shampoo Deep Hydration for Dry Hair. ... ,  Smoothing Therapy Keratin Color Care Shampoo. ... ,  PureBiology Hair Growth Stimulating Shampoo.