(Review by Kerry and Wile_E2005) Nighthawks (1981).
In the beginning of this one Sylvester Stallone wears a mask to cover his full beard and pretends to be a nurse in a sting operation.
In a bedroom, the villainess gives plot exposition of why it is she has been killing everyone.
She then takes off her blond wig and peels off her latex mask revealing a bald, severely burned face--much like Freddy Kreuger or the mutants in "Beneath The Planet Of The Apes". Donna Gardner (Lara Flynn Boyle) and Scott (Kipley Wentz) are in a corridor. He then grabs her cheek and begins to tear off her latex outer covering revealing that below the covering -- is a corpse in disguise!
At the end of the movie, he is also seen wearing a long blond wig and a woman's nightgown - pretending to be Lindsey Wagner (from the rear).
Nightmare on Elm Street 4, A: The Dream Master (1988).
Female porn stars and female masks, does it get any better than that? A dead woman is resurrected as a look-a-like robot who goes around in various disguises murdering the people responsible for "her" death.
A French-Dutch collaboration in which an artist who owns a museum of famous murderesses kills female victims and drains their blood to keep his daughter alive, then chemically hardens their dead bodies and fits them with latex masks to add to his museum display.
The scene in which the villainess (Salome Jens) "steals" the dead nurse's face is fascinating.
What's more, the bad girl sports a set of hypnotic fingernails that could literally knock your eyes out!
The psychopath responsible boasts that Gretchen "..my masterpiece." He then takes off her face and says, "And her face..was meant for me. His inappropriate lavatory etiquette gave him away! Climaxes with the hypnotist's beautiful assistant Justine (Allison Hayes) unmasking herself to reveal a disfigured face.
It was very obscured by the removing hand, and then sloppily morphed over with the next actress. After the usual cut away, we see her tugging for some seconds at her mask, pulling it out of shape fascinatingly (but it looks more like some special video effect than a mask), eventually revealing a blue head much too large. All the masks are stiff, stylized ones, but it (and the movie) are worth checking out. A skinless Clare Higgins (Deborah Joel doubling) comes back from the dead, and is pretty frightening in a morbidly sexy way.