It is commonly known that juicing (drinking fresh vegetable and fruit juices) helps fight face wrinkles, but it is also great for obtaining and maintaining healthy hair. Cucumber and bell pepper juices are wonderful sources of silicon which strengthens hair. Parsnip juice is a well-known beauty tonic for skin, hair, and nails. Raw vegetable and fruit juices provide a concentration of the most beneficial nutrients that is far superior to any vitamin supplement that you can buy.