does caffeine in shampoo make hair grow faster?

[appealisLAW]

it hasn't been proven or disproven by scientist, but whenever i use it for longer periods of time i feel like it has an actual effect on the speed of hair growth. have you noticed anything while using it?

 

[tom1000]

 

[lloyd2103]

it hasn't been proven or disproven by scientist, but whenever i use it for longer periods of time i feel like it has an actual effect on the speed of hair growth. have you noticed anything while using it?

probably placebo