By Dan Avery For Dailymail.com
Published: 21:52 BST, 14 September 2020 | Updated: 21:55 BST, 14 September 2020
When it comes to flirting, it's all in a look.
Women give specific facial cues when they're flirting, according to researchers at the University of Kansas.
The team used the Facial Action Coding System (FACS) to identify the most recognizable flirtatious facial expressions.
The technology, which describes facial movements, showed the most effective flirting cues include a head turned to one side and tilted down slightly, a slight smile, and eyes turned forward toward the target.
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Researchers from the University of Kansas found that certain female facial expressions - including a head tilt and maintained eye contact - were almost universally recognized as flirting by men
Flirting is one of the key components of human sexuality, but it's only just begun to be analyzed by scientists.
'There are very few scientific articles out there that have systematically studied this well-known phenomenon,' said Omri Gillath, a psychologist at the University of Kansas, and co-author of the report, published in the Journal of Sex Research.
'None of these studies have identified the flirting facial expression and tested its effects.'
Gillath said an analysis of a half-dozen studies found that women's facial expressions non-verbally convey romantic or sexual interest, and that men were able to recognize those cues as representing flirting.