apEver 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-Aa and vitamin Ca treatments, as well as creams with licorice roota extract to fade age spots. Watch her full beauty routine to see how she keeps her hands looking so youthful.