What pigment should be used to dye the tattoo cyan?

There are two kinds of pigments that are easy to find when you tattoo yourself: carbon ink (black) and blue ink (the cyan you want).

However, due to the different components of these two inks, the particles of carbon pigment itself are large and sticky, which is easy to stab the skin and form color. Blue ink is not easy to dye, and it needs to be heavier and deeper to dye the ideal color. If the needle is heavier and deeper, the direct feeling is more painful, and the indirect consequence is that the tattooed part is more prone to scar hyperplasia and pimples after skin repair.

Blue ink is hard to stab yourself ... You see, blue prison work in society is usually stabbed by experienced people.

Now there are tattoo shops all over the street. People can make tattoos much more beautiful than themselves, but there is no prison cyan.