I bought this mask because I like fermented product. And I really like this mask. It fits perfectly and adheres well to my face. The amount of "cream" in the mask is just about right. I leave it to dry for about 30 min and take it of. Before using it, I use the ZYMOGEN Houttuyna Cordata Ferment Serum, which I think is a good combination. It calms my acne prone skin and I use about one mask per week.