Dear gentlemen, sharpen up your razors and lather up that dome, it may be time to shed your locks for a more dominant look — bald.

A University of Pennsylvania study found men with shaved heads were rated as more dominant, a revelation, the study said, that could cause guys with male-pattern baldness to stop spending money on Rogaine and other treatments and embrace the Bic.

The study opens with an apt quote from comedian Larry David — a staunch bald advocate: “Anyone can be confident with a full head of hair. But a confident bald man — there’s your diamond in the rough.”

The study conducted three experiments in which participants rated photos and descriptions of bald men and those with hair on characteristics such as dominance, confidence, masculinity and attractiveness. The studies found bald men were seen as more dominant over their coiffed peers and were viewed as taller and stronger.