Does the clinic where I received the filler procedure also check the progress later?

I am considering getting fillers, but I am concerned about the aftercare just as much as the results immediately after the procedure.

Even if it looks fine at first, I think you might have questions as time goes by.
I'm not sure if there is a separate process for checking the progress after the procedure.

For those who have received the treatment, how did you inquire when you experienced any discomfort after the procedure? I am curious if you chose the clinic after checking the aftercare as well.