With all the damage we do to our locks, sometimes our hair needs a revitalizing boost. Actress Reese Witherspoon is a fan of Viviscal tablets ($50; walgreens.com). “When I'm working on a movie, they blow-dry and curl my hair quite a bit,” the actress told InStyle.com. “I take these supplements to keep it healthy.” The tablets provide overworked and damaged hair with nutrients to keep it strong and are a great way to increase your hair’s natural shine without adding too much product. For more celebrity favorites, click through the gallery.