M Series by Mike Devries & Mario Rosenau

The M Series, designed by Mike Devries and Mario Rosenau, is formulated
for portrait work, realism, and monochromatic tattoos.

The series features an assortment of portrait tones that were designed to
compliment each other.
Mixing them on the fly will get you amazing results for your skin tones
as well for other elements in your work.