I used baby shampoo but many of the "no chemical" shampoos are good for the environment but not necessarily what your new hair needs. Something with few chemicals and keratin may be good for stronger growth. I have heard that Aveda shampoos is good but haven't used it. Don't be surprised at changes in your hair - colour, texture, everything! And it can keep changing for a really long time. Like many people, I started with chalk white frizz, then grey frizz, grey brown frizz, brown curls and finally (well to date, nearly three years later) slightly wavy. My hair was poker straight before. It was also coarse in texture and is now much finer. I have always liked changing my hair around, so I don't mind the variety! Good luck.