Here’s how to repair damaged hair with a common fruit you most likely have in your kitchen. Mash a ripe avocado (pit removed) with one egg, then apply this home remedy to wet hair. Avocados are rich in vitamins, essential fatty acids, and minerals that will help restore luster to your hair, says Stephen Sanna, expert colorist at the Pierre Michel Salon in New York City. Leave on for at least 20 minutes, then rinse several times. Repeat once a week for damaged hair and once a month for healthy hair.