These heads are cast in a 2 part resin. Each head is molded and cast by hand. There will be no air bubbles or Flash. They will come cleaned and ready to paint.
-Tips-
Clean your head with 100% acetone before painting. Allow 1 minute before applying paint. This will allow the paint to adhere to the cast resin better. The plastic will become soft on the surface and almost gumy feeling, this is normal, and why the paint will stick better. You have opened the pours of the plastic with the acetone.