Is Invisible Ink Toxic?

Is Invisible Ink Toxic? Invisible Ink Markers Light Up with the UV Light (included). Non-Toxic, Environmentally Friendly, High Quality, Long Lasting, Waterproof. Make an Ordinary Day, Extraordinary! Is Invisible Ink safe on skin? It will cause no damage to eyes nor risks of skin cancer. When the black light falls upon the UV-visible ink, it