What are some good hair products for kids with curly hair?

My 5 yr old daughter has beautiful, thick curly hair. As it starts to dry it looks like corkscrews but then it starts to frizz and she gets fly away strands that make it look messy. I'm looking for a product that would give her curls some definition. Another problem is that in the back, the inner layers don't curl as much as the outer layers do. She has long hair and the weight of it makes her hair appear straight on the top of her head. She is multiracial. I have super straight hair and her dad has what his mother calls " good hair", which to me is tiny little curls that are pea sized when he trims it and i find it in the sink. I have tried black hair care products but they are too thick and heavy for her hair. Her curls are also not very uniform either. Some sections are curlier than others. When i braid her hair while it's damp and let it dry and remove the braid her hair is straight. I usually leave it loose with a leave in conditioner but it looks too wild. Any suggestions?