Board Thread:Off Topic/@comment-25857155-20151110093941/@comment-26397825-20151119004052

They can infuse it into their skin, and I've just been kind of assuming this is through the use of tattoos which are done with ink. Besides, it wouldn't be that hard - just mix it together when creating the ink. A gel pen uses extra thick ink normally, so whatever they do to create the gel ink wouldn't be too dissimilar to mixing the dust into the ink, in my opinion.