Sex and the High Command (1970) by John Boyd
Dr. Henrietta Carey, leader of the Fems, was the first woman candidate for president and the perfector of VITA-LERP, a biological skin cream designed to do away with superfluous men. It spelled WAR BETWEEN THE SEXES
From a Goodreads review:
It's contemporary 1970s America. Captain Ben Hansen of the United
States Navy is just returning home from an eighteen-month tour of duty
off Antarctica. While he's been away, a scientist by the name of Dr.
Henrietta Carey has perfected an orgasm-inducing parthenogenesis drug
marketed under the name "Vita-Lerp" and colloquially called a
"V-bomb." As a result, America's women are flocking to the
FEM—Freedom, Equality, and Motherhood—party to support Carey as a
presidential candidate and literally eliminate men as superfluous
quantities. Hansen falls in with several high-ranking military
officers and key cabinet members to plot how to take the United States
back from these crazy manslaughtering women.