Stinging Nettle grows in many parts of the world, including the United States. It is the stout plant’s rich content of minerals and vitamins that make it a desirable ingredient for many body care products. It contains B complex vitamins and biotin, known for encouraging hair growth. Nettles are also said to possess 10-percent more protein than any other vegetative source. As a natural astringent, it can tighten pores and possibly alleviate symptoms of acne. The antiseptic qualities of nettle extract make it a suitable natural cleansing agent in many shampoos and hair care items.