The colloidal silver one is true. If used for a long time it will stain the skin. It is also a miracle cure for many things. My neighbor is a wound specialist and I had a bad burn a couple months ago.She gave me some SSD cream and it worked like a miracle both for the pain and the healing.
Are you sure it wasn't the magnets in your pillow?
Oh, no, I haven't had a salt lamp yet. A life of deprivation.