After receiving a pore injection once at Izu Clinic, I received a review about 7 months ago, and it definitely improved. It seemed like the effect started to appear after a month. This seems to be different for each person. Fine pores have definitely shrunk, and the area where I had acne near my eyebrow bone has a small pore-like depression, but it has been filled in. So I feel that it is more effective. Well, I was fine with just doing it once, but I think it would be better if I did it five times.