I am using this product for the first time and I can see the difference after using it for 3/4 days. I use it according to the instructions with the rest of Skincare and I highly recommend it. In my case, the mask has definitely reduced the pores, which makes the face seem "cleaner" or "whiter". As for possible irritations, in my case the mask burns a little after application but does not leave redness or allergic reactions, so I think it is a subjective feeling or such a "charm" of the product. The quality and quantity for the price is very good in the best sense of this statement, it is a large package with a spatula and very efficient. It washes off the face very well and leaves the skin soft without a feeling of tightness. I am sure that I will buy another product of this type and a mask from the same series. I also noticed that the blackheads closed on my chin, with which I had a problem for years, disappeared and I used acids, creams and creams that did not help as efficiently as this clay. As for this type of pore cleansing product, I think this is the BEST, and I say this as a person with demanding skin and allergies to ingredients in cosmetics.