Toddlers hair feeling dry

My girl has curly hair, most mornings it’s knotty at the back where she’s been sleeping, it brushes out fine, I rarely use products in her hair because some look too greasy, I just use shampoo and lots of conditioner, I’ve noticed her curls at the back feel dry (mainly the ends) it doesn’t look broken and i definitely don’t want to trim it yet, any suggestions to add that moisture back