With all due respect, if you believe that true colloidal silver can cause irreversible shades of gray you are clueless about colloidal silver and have demonstrated your own lack of knowledge and credentials as an alternative medical pratitioner.
First of all, argyria is NOT irreversible and second of all, I challenge you to name me ONE single instance of a case where properly made and administered true colloidal silver caused irreversable shades of gray.
Are you here to contibute to this forum or to promote your own services?