I agree that each case will be slightly different but definitely not after 4 days, you were right to say no! It still amazes me sometimes what some doctors recommend and I believe in some instances we have more knowledge on the skin. Accutane is a systemic drug which will take a lot longer than 4 days to no longer have any effect on the body. I would just work with the client and see her recovery, maybe do a test patch on her after a few months and take it from there.