Externally, the plant is used to treat skin complaints, arthritic pain, gout, sciatica, neuralgia, hemorrhoids and hair problems.
When used as shampoo it promotes shine. It is used to soothe and calm rashes, redness and light pain.
Nettle relieves eczema and acne, removes warts when applied topically, and relieves itching from rash. It has a stimulating effect on the scalp. It works to relieve dandruff and is a conditioner at the same time. Nettles are high in anti-inflammatory flavonoids and contain small amounts of plant sterols. They are very rich in vitamins D, C and A which are all good for your skin. They are also high in the minerals of iron, calcium, phosphorus and magnesium. They are thought to have immune stimulating properties.
Due to the astringent qualities of nettles they have been used through out history to help with wrinkles, puffiness and acne as a facial bar.
We use it infused in some of our soaps and I have used it in a salve to help with my arthritis pain mixed with other herbs and botanicals.
Sources for more information:
University of Maryland Medical Center http://umm.edu/Health/Medical/AltMed/Herb/Stinging-nettle