Look to nature for covetable beauty benefits.* Horsetail, also known as bottle brush, is a perennial that has been used as a remedy dating back to the ancient Greek and Roman times and is so named because of its feathery leaves, which look like a horse’s tail. Horsetail traditionally supports healthy hair and nails.* Nature’s Way Horsetail contains 440 mg per serving of horsetail for traditional nail and hair support.*