The wasp woman

 Janice Starlin, the owner of a cosmetics firm, sees that her fading beauty is not only causing waves in her personal life but causing some prestige problems for her also-fading business. She becomes an easy mark for a pseudo-scientist, Eric Zinthrop, who claims to have developed a serum from the enzymes of wasps that will turn aging skin to youthful-looking skin. She, without any hesitation, agrees to be the first human to try the Zinthro injections. But, as her beauty returns, her secretary, Mary Dennison, and her advertising executive, Bill Lane, notices she is also having a personality change and it isn't for the better.