How to stimulate hair growth?

wat is a way to stimulate hair growth..i recently cut my hair which was a little longer than shoulder length [i have african american hair btw] nd rite now its 2 nd 1/2 inches above shoulder length how can i help it to grow to those 2 1/2 inchedHow to stimulate hair growth?
The only thing i can think of is what i was told in health class before that before you get into the shower massage your head with your fingertips to help redistribute the oils in your hair and that could help the growth good luck!! Happy New Year :)How to stimulate hair growth?
Drink lots of milk. A drank about 2 cups of milk everyday for 2 weeks and my hair grew about 2-3 inches. It really helps, trust me.

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