The ESC clay powder, light green in colour, is of the surfine type, i.e. with a very fine grain size, easy to shape and apply. It comes from French green clay deposits from clay banks located at the foot of the Auvergne volcanoes. Its origin gives it a unique structure composed of 3 complementary clays (illite, montmorillonite and kaolinite). Our clay does not contain Quartz. This composition has unique virtues that are characterized by a strong power of absorption and adsorption (i.e. its capacity to load itself with nutrients contained in the soil). Our clay, which is a natural mineral, has a high covering power and its extremely low moisture content is between 4 and 6%. Its natural composition is particularly suitable for reducing the risk of tendon engorgement after exercise.