Chemical peels rarely are of any value in treating acne scars. The gold standards for ice pick scars are dermabasion (NOT micro dermabrasion) or fractional CO2 laser resurfacing. These may be don alone or in combination with surgical removal of some of the scars first.
Generally I would encourage you to wait a full year after completing the course of accutane before considering and type of chemical peel and then only if oil production in the skin has returned to normal. For the most part, chemical peels are only modestly helpful for acne scars especially in young people. Direct acne scar surgery with subcision and possible fat grafting is more reliable but this depends on the individual scar. The Cross method has been successful for given individuals but I have also seen some terrible scars caused by peelers who did not really understand the limitation of this method. I think extreme caution in appropriate for that approach. I also have patients with acne scars who get hyaluronic acid fillers as a volume option which does not require much down time and are very pleased with this approach. Let your face recover from the accutane and get several opinions before proceeding.
Thank you for your question. Although chemical peels are an option in treating acne scars, they are associated with significant downtime and potential complications in certain skin types, considering very deep peels have to be performed to resolve acne scarring. As of today, the treatment of choice for acne scarring is a radiofrequency micro needling device such as Infini or non-ablative fractional laser resurfacing. These are done in a series of treatments, are safe for nearly all skin types, and can achieve very significant improvement in deep acne scars.