I take Accutane in last 8 months, is it okay to me to get a tattoo?

Not a good idea!!However, I doubt that you actually scarred your skin, more probably just inflamed and irritated it.You can get 1% Hydrocortisone over the counter and it should,within a day or two solve the problem.Meanwhile, don't wax again until you are done with the treatment.

Nothing is 100% including Accutane and I've have had, over my years of using it, a small number of patients who need a second course to help clear them better.I also have had one or two patients in whom Accutane had absolutely no effect at all -- something I'm not happy about.Because you said...

I agree with the previous answer that sometimes patients need a longer course of Accutane.  And I also have seen patients who have not gotten real clearing until the last month.Discuss this with your practitioner and let them know your feelings.