I don't believe in treatments or home remedies because it's just adding more chemicals or junk to your hair. If your hair is dry or damaged due to dying and using heat products, there's no way to repair it. However, there are things you can do to promote stronger healthier hair as it grows.
Get regular trims every 4-6 weeks, take a multivitamin every day, eat a healthy diet with lots of protein, use less of heat products and dye, don't use styling gels or sprays etc, get a good shampoo and conditioner (Back to Basics is a wonderful brand), avoid shampoos and conditioners full of wax, and just take great care of your hair. I would also suggest to stay away from leave-in conditioners.