@E. Hyde - all the makeup I used on my face was normal drugstore brand makeup! It shows up and stays really well (since it's powder based, and PAX likes to hang out on your skin with a layer of powder on top.) So play away with makeup
I actually painted a layer of PAX over my hairline so that when my wig inevitably slipped backward, you wouldn't be able to tell. It worked great for photos, but getting the paint off was a real chore. So be prepared to spend a long time in the shower with the remover if you do paint around your hairline since the PAX likes to stick to hair. Eyebrows I didn't have the same problem, as the PAX came right off. I'm guessing that since the hair was shorter, there was no issue.