REALAGE TIP

The Vitamin for Healthy Nails

Of all the nutritional supplements touted for treating nails that split, break, and peel, only one has gotten a universal thumbs-up from science: biotin.

Biotin, a B-complex vitamin, has long been used to treat damaged hooves on horses. And since our nails are made of the same stuff (keratin), it turns out the supplement works for us two-legged creatures, too.