What's the best shampoo for rough dry frizzy curly hair?

I have long curly hair that is also dry and frizzy!..I've tried soooo many shampoos and none seem to work! Ive tried tresemme which worked for a while then it started making my hair rough. Then I tried dove shampoo for dry damaged hair and same thing then i moved on to infusion which didnt do much and i recently bought the cabellina shampoo that's suppose to work great and nothing!! (also tried herbal ess and pantene) I've done hair mayonnaise and hot oils which helped a little. I love my hair and im in need of a really good shampoo that doesnt make it feel like horse hair!! Someone pleasseee help me!! ..I heard nexxus is good just havent tried it