My DD2 had thick curly hair down to her backside even as a toddler, and still does at age 18. It bounces up about 6 inches when dry. Now that DD3's hair has grown really long (she is now 15) it also has about 6 inches of bounce. She can just about sit on it when it's wet. DD3 (I think I called her DD4 upthread
-- she wouldn't like that) is a redhead and had less hair as a baby, and it seemed to take longer to grow than DD2's hair. She was born with a mop.
I washed DD2's hair every two days when she showered. I let them all shower themselves from age 4 -- if a small child gets under the water often enough she will be clean even if she doesn't attend to each and every washable bit every time, and I think the habit of washing is an important one to develop. And of course, being clean has a lot going for it too.
For haircare, I leaned in around the shower curtain and squirted the right amount of shampoo and then conditioner on, watched to be sure they were washing it right, and made sure it was all rinsed. When we changed to conditioner only, I supervised until they were able to manage it properly themselves.
For DD2's long hair, I then put in some leave in conditioner on the last ten inches and combed through with a pick, and when it was almost dry I plaited it. I never brushed it. With DD3 and her shorter but still very curly hair, she could scrunch it herself. Before discovering the Curly Girl / conditioner/ no brushing the pulling was just horrible for her, hence my search for an alternative..
We never got nits. I dreaded them because their hair was really not amenable to the fine combing required.