Question: what is the best shampoo for old hair?
Answer: Nexxus Youth Renewal Shampoo. This anti-ageing shampoo is perfect for helping with the signs of ageing hair. ... 
TRESemmé Collagen+ Fullness Shampoo. ... 
Dove Pro Age Shampoo. ... 
TONI&GUY Damage Repair Shampoo.