This mineral-origin yellow clay allows to absorb sebum excess and tighten pores. It purifies and soothes the skin. Less rich in iron oxide than green clay, the yellow clay is softer for the skin. It contains also a stimulating action thanks to its richness in minerals. MatiSystem complex This association between an extract of Enantia chlorantha, African tree rich in protoberberine, and the oleanolic acid allows a sebum regulation in order to limit excess and their consequences, by acting on several levels: number of active sebaceous glands and the number and maturation of sebocytes.