I'm not sure how they do it, but after using the first mask for 15min, my gross sebaceous filaments were literally pouring (poring haha) out of my nose. I know, graphic image, but this is super good for pore care. I get why EuniUnni has been raving about this for years – it's like the magic of pore strips, but without enlarging your pores and making your nose all irritated! Don't put the serum on the rest of your face though, keep it around your nose only (the essential oils make my cheeks sensitive).