On the surface of Face or Head(G9) - Base Color, click dropdown list, choose Layered Image Editor in which you may see the tattoo and find the location of texture map.
If it's a geoshell tattoo, select shell node and find the map on surface of Face or Head.
If it's a decal tattoo, select Decal node and find the map probably in Cutout Opacity...
I'm sorry I did not specify. This is on a fresh install and when I loaded it from the disk I could not locate the file name or manufacture by the missing file name.