There are many ways to boost brain power, from exercising more often to learning new skills. But what about boosting the actual size of your brain?

According to a new study, wearing the right kind of perfume or cologne can enlarge your brain's gray matter.

Researchers from Kyoto University and the University of Tsukuba in Japan asked 28 women to wear a specific rose scent oil on their clothing for a month, with another 22 volunteers enlisted as controls who put on plain water instead.

Magnetic resonance imaging ( MRI ) scans showed boosts in the gray matter volume of the rose scent participants.

While an increase in brain volume doesn't necessarily translate into more thinking power, the findings could have implications for neurodegenerative conditions such as dementia.

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