Ever wonder about the products professional hand models use to keep their baby-smooth skin? Child-size hand model Christina Linhardt, whose hands have appeared in numerous toy advertising campaigns, makes a living thanks to her smooth and spot-free hands. So, what's her secret? She swears by Retin-A and vitamin C treatments, as well as creams with licorice root extract to fade age spots. Watch her full beauty routine to see how she keeps her hands looking so youthful.