It would be reasonable to do a Brazilian Blowout while on Accutance. I would only consider that your scalp might be slightly more sensitive under these conditions.
This is an impossible statistic to answer. You are required to be on 2 forms of birth control while taking Accutane, and for a month following your last pill. According to the FDA it is only safe to conceive a minimum of 30 days after your last pill. "This answer has been solicited without...
Unfortunately this happens frequently and it's why I often tell patients to immediately leave my office and go to the pharmacy to drop off the prescription. If the Accutane isn't in stock you can miss your window to pick it up within the iPledge program. Next time you get a prescription, take it...