Horsetail is also known as scouring rush, shavegrass, bottlebrush or pewter wort. Because of its large quantity of silica, horsetail has been used as to strengthen hair, skin, and nails, as well as to clean. Horsetail has a recorded history going back to the Devonian period, almost 350 million years ago. The plant at that time was as tall as a modern palm tree. Horsetail, not to be confused with cat-tail, is possibly the most abundant source of silica in the plant kingdom, so much in fact that the herb can be used for polishing metal.
Our horsetail consists of the sterile, aerial parts harvested in the summer months between June and August. Horsetail is also a source of potassium salts.
Safety: Equisetum arvense should not be used by persons with cardiac or renal dysfunction. Not recommended for long-term use or use by children. Do not exceed recommended dosage.