You didn't say how old your daughter is, but you can look into these.
Jane carter's Nourish and Shine is a great moisturizer for her scalp and hair.
Curly Q's products are great as well
http://www.curls.biz/store/home.php?cat=119
Neutrogena Triple Moisture Moisturizing Shampoo
KeraCare Detangling and Hydrating shampoo
Nexxus Humectress Conditioner
Kids Organics Detangling and Moisturizing Hair Lotion. Great for detangling after washing or any other time really.
www.shescentit.com has many yummy natural products for her hair as well.
Great customer service!
Everything I've mentioned, I've used before/currently. Make sure that you condition her hair each time you wash it. How often do you wash it? She may not need frequent washing. It may dry it out more.
ETA: Okay, I see she's 20 months old. I would then recommend Jane Carter's N&S, the shescentit products since they are all natural or the Curly Q products (they have a baby line now
http://www.curls.biz/store/home.php?cat=144 ). Kid's Organics should be fine as well.