Not usable in-game, meant for permanent texture editing. Does not work as-is. You can edit them so they can be used as decals, but requires editing every single texture file manually.
The amount of time and work it must have took to compile this amazing work is greatly appreciated! There are so many great presets and combinations. I find myself using them all the time. Thank you so much for creating this. Your work is amazing!
For details on how to use this resource, check out this post I made: https://hub.virtamate.com/threads/ultimate-layered-makeup-addon.33661/#post-91902