Coconut and Hibiscus Curl & Shine Shampoo. I use it and it's great - sulfate free, paraben free, silicone free (and free from lots of other stuff too lol). Plus it's not tested on animals, which is nice.
The ingredients are natural and it smells DIVINE. My hair always feels super soft and silky after using that shampoo, plus it feels CLEAN. I don't get any build-up or anything like that, but it also doesn't strip my hair
Like you, I'm not keen on the idea of co-washing. I like having a shampoo and the Curl & Shine one is amaze