As far as beauty is concerned, the extracts from the horsetail plant help stimulate the skin and the production of elastin and collagen and protect the skin from oxidation. Hence, you'll often find this ingredient in antiaging products. This restorative ingredient not only helps to tone the skin but is also used to help repair brittle fingernails. Try Honeybee Gardens Odorless Nail Polish Remover ($7) or The Glacial Facial Masque ($34) by Alaska Glacial Mud Company.
Source: Flickr User Richardmasoner