A surprising new study published in the Archives of Sexual Behavior has uncovered that lady psychopaths are less likely to wear makeup.

Scholars from the University of Sao Paulo asked 1,410 Brazilian women about their cosmetics usage across different social contexts, including at home, on a first date, in a business meeting, and at the gym.

The volunteers were subsequently asked to complete surveys to measure their “Dark Triad” traits —machiavellianism, narcissism, and psychopathy.

The researchers found that women who regularly wore lots of makeup scored highly on the narcissism scale.

Conversely, however, women who scored highly on the psychopathy scale were less likely to put on lipstick, eyeliner and blush in all social situations.

While the findings may initially appear unexpected, they’re perhaps unsurprising given that psychopaths are generally unbothered by how they are perceived by others.

“These findings underscore the nuanced relationship between makeup usage and personality,” the study authors stated, saying that women who wore lots of makeup were also found to be more agreeable in most social contexts.