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.