The Wasp Woman A.K.A. The Bee Girl A.K.A. Insect Woman (1959)

An American science fiction directed by Roger Corman.
A scientist who is supposed to be collecting royal jelly from queen bees is found to be taking it from queen wasps and experimenting in using it to reverse aging. He is fired, but goes to the aging beauty queen who runs the cosmetics company (and can no longer pose as the main model there because of her age) and proposes his youth-juice to her. He is re-hired and injects her with the experimental substance. Ain't no secret what happens from there.

The convoluted, but predictable plot was actually presented quite clearly and the characters were identifiable and believable. The audio and video were standard for '59, but shots of the boss later in the film were intentionally under-exposed (probably to hide crappy monster makeup). The pacing was good because the hour and twelve minute duration didn't seem all that long. One thing that I noticed was that the scientist injects a rabbit with the youth serum and turns it into a rat. Although this film satisfies a few of my main criteria, I just didn't like it very much. It may have been a lack of unique style or just the fact that it's old and I've seen far too many old science fiction films. I'm rating it o.k. for being technically sound, but just not liking it. You may want to watch it and judge for yourself.