Jojoba oil is very good for hair.
You could also start with the inside, by taking cod liver oil and Vit. E. Flax oil also works great, one or two teaspoons a day. A Vit. B complex would probably benefit as well.
Also be sure to switch to an all natural shampoo and take it easy on styling products. Use a natural shampoo with Jojoba oil, horstail, panthenol & Chamomile.