Ive had cystic acne for 15 years. I have PCOS,not sure its the cause.My parents never cared to take me to dermatologist and now Im left with terrible scarring and still getting inflammed pimples and cysts. Im on Arankele and its not working.Im Avoiding accutane for now because I know that the purging will anyhilate the rest of my skin and leave me coverd in more scars... If I use Spiro and a pill like Diane,and Differin, and acne gets more controled, can I use Iso preventatively with no purge?