Why Does Your Mouth Open When You Put On Mascara?


If you're a user of mascara, you may notice every time you apply that your mouth is hanging open.

You're not alone if you do this! An article in PopSugar asked body language expert Blanca Cobb about what the connection is with an open mouth and putting something near your eyes. 

"The open mouth phenomenon is a subconscious action," Cobb said. "You don't realize that you're doing it." Though the contortion might look weird, it actually serves a purpose. Anyone who has ever accidentally shoved a mascara wand to their eyelid knows that's not an optimal outcome, so when we put on mascara, we try to keep our eyes as open and still as possible. "Two different nerves control the muscles that open and close your mouth and upper eyelids, and those nerves are located close together on your body," Cobb said. "The leading theory for why your mouth opens while you apply mascara is because those nerves are cross-firing."

There's also another theory on this YouTube video.

Tige and Daniel

Tige and Daniel

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