Surgical spirit to clean prior tattoo. Finished tattoo wash with water +green soap mix. If I want to take very good photo of the tattoo, but its very red - I apply Witch Hazel for few minutes, it takes some redness away )
i use green soap/water mixture to shave the skin and to wipe away the ink during the process.
before applying the stencil i degrease the skin with isopropyl alcohol/water mix.
if you use tincture of green soap then it has an higher alcohol content, to some people it can sting, another problem some people speak of is the high alcohol content can erase the stencil prematurely during the outline process, i just use a basic green soap from killer ink.