This may sound really weird but, my hair is also naturally curly and about to the middle of my back. Aaaanyways, use 'Mane and Tail' shampoo and conditioner. It's for horses...aha but I've been using it since about August 2012 and it totally works! It helps keep your hair healthy to. Mine got thicker and shinier. You can buy it at Walmart :) or you can also take prenatal vitamins, they won't hurt you if you aren't pregnant but they also help your hair and nails grow!