TRESemme Pro Protect Shampoo is the first sulfate-free formulation that contains Moroccan Argan Oil. It is extremely good for persons with colored hair since it helps to keep hair color and gives the hair a long-lasting brightness and luster. The shampoo can be used regularly and effectively cleanses hair without leaving it feeling dry or tight. In addition, TRESemme has created Pro Protect Conditioner, which is free of sulfates too. This conditioner protects hair by maintaining the balance of water and oil in hair and also promotes hair growth. It's ideal for people who suffer from dry hair due to its high content of argan oil. Finally, TRESemme has developed Pure Shea Butter Cream Rinse that leaves hair soft, shiny, and healthy-looking after each wash. It's perfect for people with colored hair since it prevents color fading and keeps hair strong and resistant to environmental factors. Tresemme products are very affordable. Their shampoos and conditioners are available at major retailers such as Wal-Mart, Target, Kmart, and Costco for around $8-12 per bottle. Pure Shea Butter Cream Rinse is sold separately for about $15. Overall, I would say that Tresemme is one of the best shampoo brands for colored hair because it ensures clean, fresh-feeling hair with no chemical residues.