HUM Nutrition: Killer Nails
Are your nails a mess after too many gel manicures? Here's your solution. HUM's Killer Nails is high-potency biotin supplement, which aids in healthy skin, nails, and hair. A study showed women who were given biotin had increased nail thickness, reduced splitting, and made the irregular dorsal surface of the nails more regular in women with brittle nails.
Killer Nails, $10