I use baking soda, and i add ginger and nutmeg powder(for scented) to it then add enough water to make a paste. Put only on your scalp area, let site for 30 or so seconds and rinse. My hair has never been so straight, i love it.
I have been totally shampoo free for at least 3 years now and have healthier hair than ever! I do a shampoo free "wash" once a week. All I do is lather my scalp with water and my fingers in the shower. Sometimes I use an essential oil and rub a few drops all over my scalp to stimulate the roots. Massaging your scalp will help your hair grow!