I know that many people might frown, when I claim that the Common Stinging Nettle is a very useful and versatile herb. So often discarded as an annoying weed, the Stinging Nettle has many beneficial properties. Especially, when it comes to hair care. It is known to improve hair shine, encourage hair growth, and in some case, even combat hair loss. I myself have tried my own, home-made recipe of Stinging Nettle Hair-Rinse-Tonic and found it to be very effective, as it seems to have stimulated my hair growth (...I've always wanted long hair...).
Rheumatism is yet another ailment for the relief of which, the Common Stinging Nettle has been applied in it's natural form, apparently very successfully.
Young Stinging Nettle leaves are also said to be very nutricious and nourishing, when prepared in a salad or simply as a vegetable. I havn't tried it yet, so I can't comment on it's taste, but whatever you do, never forget to wear your garden gloves when you handle this welcome/unwelcome visitor to your garden.