I have lipstick marks on face from Z store, but i want there to be a preset that can be used in layers of individual parts of the skin, manually.
No easy presets here, sadly - I just take some lipstick-mark images off Google, paste/rotate them onto a G8M head/body/etc map using someone's texture as a guide, and end up with a mask texture (greyscale, everything black except the lipstick marks which are white). Then I can create a geoshell, set it to Iray uber shader, use the mask as both opacity and bump maps (tweak the scale of both until it's to your liking), and fiddle with the color/gloss settings to match the sexy MILF who's marking him up

You can also make mask textures and use them the same way but on Iray decals.
[edit] If you make a geoshell for Dicktator, just make sure that its offset is greater than the
other Dicktator shell's offset, so it shows up "above" the regular texture.