Question: what is the best shampoo to repair damaged hair?
Answer: Best Overall: Olaplex No. ...  Best Budget: OGX Thick & Full Biotin & Collagen Shampoo. ...  Best Sulfate-Free: Briogeo Don't Despair, Repair! ...  Best Drugstore: Nexxus Keraphix Shampoo for Damaged Hair. ...  Best for Color-Treated Hair: Pureology Hydrate Shampoo.