Lithopone is a mixed zinc sulfide-barium sulfate brilliant white pigment that contains about 30% zinc sulfide. The original light sensitiveness of this pigment has been mitigated by purification and by the addition of such agents as polythionates and cobalt sulfate.

Professor Thomas Faunce spoke out about the rise in auto-immune diseases & childhood autism in relation to the rise of nano-particles in our child food supply. The full article can be found here.