My hair was falling out after a harsh chemical treatment for lice while in Brazil, will the hair com

Get yourself a shampoo/ conditioner that has Tee Tree in it.

Also take hair vitamins that make your hair grow. The main ingredient for hair growth is Saw Palmetto and Horse Tail. These can be found at a health food store.

My hair was falling out after a harsh chemical treatment for lice while in Brazil, will the hair come back?

yes use a good shampoo and a conditioner and take good care of ur hair and see the lice dont come back, as they r attracted to dirt.