I used Colloidal Silver for years with no signs of argyria. I used it to combat prostatitis. I then learned about ozone and found it to be much more powerful than CS. I discontinued CS completely for 1 year with no signs of argyria. Through Curezone I learned about the Hulda Clark liver cleanse. I did the cleanse and within 4 weeks I began developing argyria. The color isn't blue like most cases. It is grey as it is oxidized silver via glutathiones stores in the liver. Do not do a liver cleanse if you have taken Colloidal Silver for a long time. You must consume a binding agent if you do: like Bentonite clay, chitosan, chlorella to bind with the silver. Even then I can't guarantee you won't develop argyria. Email me at: summer_land.live.ca if you're in need of a cure for argyria. I have luckily discovered a cure for argyria.