Some people say it will take three years, others say it will take a long time. Some people say to pick with sterilized needles. There is a white thing in it. Pick it out. Some people say that it is good to take down the rice slurry and drop it on it some time after heading, but it has not yet grown into rice grains or rice slurry. I've planted them before. I suspect it's toad venom, but I'm not sure. I have grown for several years, and it is still on my forehead. I've tried everything, picked it out with a needle, and it still doesn't get better. Later, I heard that rice paste was used, so I went home from school to get juice and tried it. In a few days, the dead skin fell off layer by layer and slowly recovered. But after that, a lot of red pimples appeared on my face, and they recovered after a week. I don't know whether that method is really useful. But you can try.