Amazon.com : Moroccan Argan Oil Sulfate Free Shampoo and Conditioner Set - Best for Damaged, Dry, Curly or Frizzy Hair - Thickening for Fine/Thin Hair, Safe for Color-Treated, Keratin Treated Hair :
Best Sulfate Free Shampoos. I would add DevaCurl. It's expensive though but... - Hairstyles | Caring for colored hair, Shampoo for curly hair, Hair growth shampoo