So recently I went for a facial at the local beauty spa, and found this product at their desks. I bought it to try out (wasn't that cheap). The mask should be used perhaps two to three times a week for exfoliating. After testing it for a few weeks, I can say that when applying it I felt a slight burning sensation. My skin isn't normally sensitive to skin care products. My face did feel smoother after using the product but I wasn't entirely impressed.