MMS works on things that nothing else will like IBS, and similar problems. Some believe they may be cured of herpes. I still take some occasionally for sinus allergies.
I wouldn't take large amounts of it for long periods of time unless I had a good reason. It's an oxidizer so it could decrease the collagen in your skin. I noticed a wrinkly look in the neck area. When I quit using the Miracle-Mineral-Supplement it returned to normal.