It’s difficult to have a standardized solution for headwear. People are probably better off doing that themselves, it wouldn’t be that hard if you knew what you wanted.
You can add this now if you want. Go to CC_menu and into the general graph and at the top there’s the function for the skin texture. Duplicate that and replace the skin texture arrays with your own tattoo arrays (or makeup, whatever you want). “Param name” is the name of the parameter in the skin materials so you’d have to create that parameter.