Question: which is the best shampoo to prevent hair loss?
Answer: Revita Hair Growth Stimulating Shampoo. ... 
Ultrax Labs Hair Surge – Caffeine Hair Loss Hair Growth Stimulating Shampoo. ... 
Nizoral A-D Anti-Dandruff Shampoo. ... 
Lipogaine Big 5 All-Natural Shampoo. ... 
Alpecin Caffeine Shampoo. ... 
Classic Lipogaine Big 3 Hair Loss Prevention Shampoo.