I have tried more high end clay masks before and though the cleansing power of this is not as strong as those, I don't find it a problem especially if you are going to use this regularly. I have been using this 2 times a week and it helps keep my skin breakout-free so far.
Skin feels super clean after leaving on for about 20 mins. Sometimes I leave it longer and it didn't sting at all.
Feels a bit like the daiso charcoal one and kind of works the same too. Just that the daiso one is a little hard to peel off and I can easily wash away this mask on my face. Effects wise, would say its pretty good since my blackheads are always all removed.