DMSO question. If it's ok here...

I saw a broken link somewhere on how to test for DMSO allergy (weak liver) I think I might fit this and wanted to check ...anyone know the DMSO allergy test. I think it was a home test.

Also is it safe in the sinus I have scar tissues in sinus from surgery and want to reduce it.

How do you get the small out of clothes and such?

Thanks in advance sorry if it's the wrong place to post I was told there was a DMSO forum in here and didn't see one directly.