My hair is relaxed, and I use Nexxus shampoo and conditioner. My hair is thick and healthy. I use Cantu leave in conditioner, and it is the best leave in I have tried. I don't recommend Carol's Daughter products (I've only tried the hair milk and the hair butter or something like that) because I think they are too expensive, too heavy for my hair, and didn't condition or do what the products were advertised for.
Additionally, I think we as African American women do not wash our hair as often as we should. People at school always acted like I was crazy that I washed my hair every other day, but were constantly complimenting on it. Whenever I told them that washing it more often and where you go to get it done was one of the main reasons, they, again, acted like I was crazy. Hair is just like any other part of your body and needs to be cleaned frequently. Just think about how much your hair is exposed to everyday - pollution, smoke, dirt, etc. You wouldn't go two weeks without showering would you? Well, I hope not.
Okay, sorry for the rant, but I just hate that we think only Cacuasian women can wash their hair more than once a week.