"i have been using ziana for almost a year now. i had the deep cystic acne that was painful and huge. after a couple of weeks using ziana my face cleared up and in almost a year i have not had one pimple. i experienced no side effects and have been using it once every other day for a couple months now (because it&#039;s not cheap). my doctor also prescribed me a sulfur face wash which i use every day at night. ziana is like a miracle to me."