Die! Die! My Darling! [1965]

1. Her face half concealed by a curtain on the bathroom door.
2. She violently attempts to wipe away all the lipstick. (Echoed in The Substance?)
3. A secret chamber stuffed with forbidden remnants of her old life.

Tallulah Bankhead is 110% the entire film and scripter Richard Matheson keeps coming up with squirm-worthy twists.