What shampoo and conditioner is good for really curly hair?

My boyfriend is growing out his hair and we're both spanish, but his hair is very different from mine. His hair is super thick with small tight curls. His hair is very dry and I don't know what kind of products to suggest to him.What shampoo and conditioner is good for really curly hair?
i know people will tell you to use expensive salon products, but i personally have been trying to find a good shampoo for years and have spent 20 dollars or more on shampoo and the best i have ever used it herbal essences hello hydration in the blue bottle. i swear, i can get away with using nothing but this shampoo. no conditioner, no biosilk . and my hair looks and feels great, its incredible. it defines the texture of my hair like nothing else. the key is not to shampoo daily, only every onther day at most.What shampoo and conditioner is good for really curly hair?
nothing. Your hair shouldnt be washed with shampoo and conditioner. Your hair has natural oils in it to be able to rinse it under water. I haven't washed my hair in years and the hairdressers have said to me its the best hair that they have seen in a long time!
Anything organic. Try Avalon Organics, or Aubrey Organics. :) Coconut oil rubbed into the roots is very healthy, and also aloe vera all over your hair will keep it soft and silky :)
Matrix for Curly hair is supposed to be great.
Try lorel elvive or frizz ease theyre good and ewww thats sick not washing your hair it would smell
Try herbal essences it's a curl thing (the one in the purple bottle)
garnier is really good