Very Similar To A Peter Cushing Film Named Corruption

it was made about 8 years after The Leech Woman...he played a surgeon who made his wife gorgeous again but the serum lasts only a short time..he must kill woman for this gland.

here is the written synopsis:
A surgeon discovers that he can restore the beauty to his girlfriend's scarred face by murdering other women and extracting fluids from their pituitary gland. However, the effects only last for a short time, so he has to kill more and more women. It is ultimately a killing spree which ends with considerable death and disaster.