Dyes come in different permanence, but some colors like to stick around for longer. For example pthalo based dyes(or paints even) likes to stain everything and have a tendency to leech into places you don’t want them. Yellow dyes tend to fade from UV exposure very easily. I have no idea what’s in that green dye, but holy shit I hope it’s not carcinogenic.
Isn’t that basically the whole point of a dye? If you didn’t want permanent you’d go with makeup.
Dyes come in different permanence, but some colors like to stick around for longer. For example pthalo based dyes(or paints even) likes to stain everything and have a tendency to leech into places you don’t want them. Yellow dyes tend to fade from UV exposure very easily. I have no idea what’s in that green dye, but holy shit I hope it’s not carcinogenic.