Did you know that aside from your face, your hands get the most sun exposure? That's why it's essential to protect them on a daily basis. Sure, you've been faithfully slathering SPF on your face for years — and get compliments from your friends, family, and dermatologist on your complexion — but look at the backs of your hands. The thin skin there is susceptible to wrinkling, sagging, and dark spots like your face . . . but your paws don't have the luxury of wearing foundation. Read on to discover 10 ways to keep them healthy and youthful.