@Adam Formanek honestly nothing good … I don’t trust the chemical involved in the process of making the ink glow … u need to understand that to make the ink glow u need to make a stable ink into something that react so Im no chemist but I do like to use ink that are the less armful to the body and won’t gave me any bad reaction to the body … active ink …not so much … usually ink are made of pigments that u can find in the nature and u need to find compagnies u could trust I personally use fusion ink for colour cause they are owned and made by tattoo artist not like some other big brand that are owned by conglomerate… the black is usually safer cause ink are made of natural element that people can be allergic to either so that is why a lot of artist relying on black ink that was made with carbon which nobody are allergic that can walk in a tattoo parlour … so for me it’s a recipe for disaster cause I don’t know how it’s gonna heal I barely know how Colors will heal into the body of someone and they are stable ink I won’t make myself more screwed with something I know that are reactive and I guarantee my work even if I know healing is 90% of the job and some people are too dumb to follow the basic instruction and even that I do touch up (in all my career i thing it happened once or twice that I made someone pay for touch up cause it’s was oblivious that they screwed up their tattoo ) on allergic reaction the only thing that could be done is laser removal … otherwise the person will get permanent itching under the skin forever