I want to pick up the boil. What should I pay attention to? Is it better to pick it up in Chengde?

I used laser treatment, and it didn't take long for it to really grow out, and it wasn't as regular as before, and sometimes it itched. My sister ordered it from an aunt named Xu in Chengde. There were some traces, but there was no recurrence. She said that as long as it doesn't hurt or itch and there is nothing growing on it, you can order it. I intend to order some in the near future. She's alone, like a recipe handed down from home, which is not formal, but many people order it. I'm from out of town, and I don't know the exact location yet. I will order my boils in the near future, and I will tell you the address if necessary.