I love this French green clay powder very much. I use it as a face mask once a week for deep cleaning. The clay will draw out impurities from the facial pores. I leave it on for about 35-40min, then, wash off with a facial cloth. My skin looks so clean. Thereafter, I apply moisturiser and the next morning, skin looks glowy and clean. This large bag is value-for-money. I used to buy a small tub from a cosmetic shop and it was very expensive. Am glad iherb sells this large bag.