Inexpensive Hollywood Skin Trick : Primer – Okay, some stars really are born with perfect skin. But most of them have a little secret called skin primer. Most skin primers are silicone-based and act as a thin layer that fills in fine lines, large pores and acne scars. The result? A smooth, flawless complexion! Give skin primer a try and you’ll understand why Hollywood make-up artists call it the under-make-up make-up.