Question: what is the best product to thicken hair?
Answer: Evolis Professional Reverse Activator. ...  Aveda Damage Remedy Daily Hair Repair. ...  Oribe Dry Texturizing Spray. ...  Dove Dermacare Scalp Pure Daily Anti-Dandruff Shampoo. ...  Women's Rogaine 5% Minoxidil Foam. ...  Professional Treatments. ...  Biotin.