Having had moderate to slightly severe acne since puberty , I have tried it all short of Accutane. I became COMPLETELY acne free at age 40 when I started DMPS chelation for mercury poisoning. The treatments were a week apart and each time would worsen the acne right after the treatment but would then look great until my next treatment. Each treatment would make it worse then better until about the 5th or 6th treatment completely cleared it. That was 9 years ago. The doctor had no idea the Dmps would do this and I have not seen where it is mentioned to cure acne anywhere. Not sure if it is the sulphur in the medicine that did the job or the clearing of mercury from the gut. Either way this was a complete cure and the answer to many prayers.