Horsetail is a mineral-rich herbal supplement with a long history of traditional use. It can help strengthen hair, skin, and nails, and has diuretic properties, aiding the urinary tract. Horsetail also has possible benefits for bladder tone and may help with urinary issues such as incontinence, and bed wetting in children. A natural source of collagen, Horsetail may also aid in healthy hair growth and improve skin health.