Hi! I have been using Colloidal Silver since 1999. I am also a licensed practical nurse, retired, not that this qualifies me in any way to give health advice, as I quit nursing when I saw how the medical establishment was so deficient in natural and non-evasive treatments. My take on using hydrogen peroxide vs CS for skin cancer, is that CS "suffocates" disease particles (virus, bacteria, fungus, yeast), and hydrogen peroxide is a form of oxygen, which proliferates cancer cells. If I'm wrong about this, I would love to know! Thanks and blessings to you! JillO