Manicouagan sea clay is a natural product from the Saint Laurent River, Canada. Over 215 million years old, this remarkable product has 42 different atomic elements and contains interstitial sea water. Rich in potassium, magnesium, sodium, iron and calcium, its properties will help to cool and tighten tendons and tissues after exercise or competition and can help to reduce minor swellings. It is particularly good for sensitive skin and safe to use over minor cuts and grazes without causing irritation.