How long does the acne treatment take? :)

I keep getting acne around my chin lately, so I'm looking into acne treatments :)
My acne wasn't that severe even when I was a student, but strangely enough, now that I'm in my 30s, it keeps breaking out repeatedly around my chin and mouth whenever I'm tired or stressed. I don't feel like just changing my cosmetics has made much of a difference, so I'm considering visiting a dermatologist.

However, since it is difficult to make time while working, I am most curious about the duration of the acne treatment. I would like to know if I can stop by briefly during my lunch break, or if it takes quite a long time if extraction or soothing care is included. :) I think it will be too late if I go after work, and I am even more concerned because I expect weekend appointments to be very busy.

For those of you who have received acne treatment, how long did it usually take from the moment you entered the clinic until you left? I am also curious if there is a significant difference in time depending on whether the treatment focuses mainly on extraction or includes laser treatments or aftercare. I would also like to know if it is okay to go to work or have an appointment immediately after treatment. :) I think I will have to adjust my schedule if my face gets very red, so I would appreciate a realistic review.