I have really really greasy hair my scalp gets greasy so bad . I have all yellowflakes in my hair and its scaly. I used head and shoulders it was a lot better but it dried out my hair a lot but it looked so much better. Should I use it everyday I tried not using it for a couple days after shampooing and it started getting greasy and the dandruff started coming back until I used the head and shoulders then it was gone. If I shampoo today the next day it would be really really greasy again until I shampoo. What should I do? I have long wavy hair .