I was on T when I had to take accutane. This was due to high T levels, which highly fluctuated due to the use of Sustanon. I did not do a full round due to bad side effects, such as dry eyes and shin splints. Still, I used accutane for about a month or so. It did clear out my acne. And it was the worst acne possible: cystic acne.
In any case, after stopping the acne did not come back. However, I switched to a different, more stable type of T as well. This means I do not know if I stayed clear because accutane did its job, and prevented a new outbreak, or because I switched T types.