So how long does a bottle of shampoo last you?

[gooseman]

Anywhere from 9 months on.

 

[hdeck]

5ish months

 

[dullard]

I have short thick hair. But still a nickle sized amount is plenty for full lather. Most people use 5-10 times as much as they really need. A large 32 oz bottle lasts me ~2 years.