Treating greasy roots

I like to straighten my hair twice a week. I have super greasy hair. I have found that Suave Daily Clarifying shampoo is the best at keeping the greasies at bay. In between washings I use one of the following products: Cake Satin Sugar hair powder (yummie, smells like birthday cake!), or Batiste Dry Shampoo Spray. Both are wonderful.