Question: what is the best over the counter shampoo for thinning hair?
Answer: Best Overall: Matrix Biolage Advanced Full Density Shampoo. ...  Best Anti-Dandruff: Nizoral Anti-Dandruff. ...  Best for Damaged Hair: Jason Thin-to-Thick Extra Volume Shampoo. ...  Best Budget: Viviscal Gorgeous Growth Densifying Shampoo. ...  Best System: Aveda Invati Advanced Three-Step Kit.