Scientists explain why women open their mouths when they color their eyelashes

Many have noticed that women who wear makeup constantly change their facial expressions. Some of these faces are cute and funny. But the ladies themselves cannot explain why they arise. For example, why is it more convenient to paint eyelashes with an open mouth? It is unlikely that women will give you an answer. But scientists figured out and explained this unusual phenomenon.

It’s all about human physiology. Neuroscientists say that when a girl put mascara her eyes, three nerves work: trigeminal, facial and oculomotor. They are responsible for the involuntary opening of the mouth when applying mascara. This happens due to the coordinated work of three nerves, each of which has its own area of ​​responsibility.

The trigeminal nerve is responsible for the movement of the masticatory muscles that open and close the jaw. The facial and oculomotor nerves control the movement of the eyeballs and eyelids. It seems that there is nothing in common, but the whole point is that these nerves are located nearby.

As a result, if one of them is active, others may react as well. To apply eyelash mascara properly, a woman must widen her eyes as much as possible. At the same time, the work includes the oculomotor nerve, as well as the corporate and trigeminal nerves. As a result, the mouth expands unintentionally, and the same facial expression that raises questions appears.

Needless to say, the situation is not hopeless. Opening of the mouth can be avoided with a little effort by simply controlling the jaw. But who thinks about that when putting on makeup? At the same time, the system does not work in the opposite direction – when chewing food, the eyes do not bulge.

Perhaps neuroscientists will be able to explain this question in the near future.