I have to partly disagree on that one. I agree that there are glow in the dark pigments that are not biocompatible (zinc sulfide based ones). The thing is there are others that actually are biocompstible (strontium aluminate based ones). They are basicly as inert as alumina ceramic (alot of prothesis are made from that). I was actually working on some glow in the dark tattoo ink some time ago. The problem that i had with that was the particle size which made it very hard to keep the particles suspended in the ink. I didn’t continue with that aproach since i was quite busy with other projects after. Injecting a thicker version of that ink with an injection needle directly under the skin works quite well (the picture is from about 8 years after and there were no complications. It also healed quite quickly). The Pigment rubbed into a scarification also works quite well. I bought my strontium aluminate pigment from a genuine supplyer back then. I didn’t use it out of the box since you never know how it’s stored and it’s probably everything but sterile when you receive it. If there if interest i could write down what i did in therms of cleaning before using it. And very important. Even though i didn’t get complications doesn’t mean noone gets complications. This is not fda approved so if you do it always take proper percautions.
