Guy German | Source | Associate Professor of Biomedical Engineering at Binghamton University, State...
Guy German
Guy German is an associate professor of biomedical engineering at Binghamton University, State University of New York. His research interests include: the multiscale mechanics and failure of heterogeneous tissues, the effect of cleansing and cosmetics on tissue mechanics, the mechanics of shaving, the mechanics of skin disorders and methods to alleviate symptoms, encapsulation and assembly of colloidal particles for biomedical applications, and interfacial phenomena. His work has been featured by YahooNews!, Allure Magazine, Scientific American, Smithsonian, the New York Post and more.
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Binghamton University, State University of New York
Associate Professor of Biomedical Engineering
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Why does water make our skin wrinkle?
Hopefully, the rain clears long enough to spend some time in the water this holiday weekend — but spend too much time in there and your fingers and toes start to resemble prunes.
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Your Pruney Fingers After After a Bath Always Wrinkle the Same Way, Study Reveals
“A student asked, ‘Yeah, but do the wrinkles always form in the same way?’ And I thought: I haven’t the foggiest clue!”
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Got Pruney Fingers? Here's The Scientific Skinny To Explain It
SUNDAY, May 18, 2025 (HealthDay News) — As swimming season heats up, you might notice your fingers wrinkle after spending time in the water — turns out, those wrinkles are the same with every dip you take. And that, researchers from Binghamton University, State University of New York, could have useful applications for crime investigators.
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When your hands and feet come into contact with water for more than a few minutes, the sweat ducts in your skin open, allowing water to flow into the skin tissue. This added water decreases the proportion of salt inside the skin. Nerve fibers send a message about lower salt levels to your brain, and the autonomic nervous system responds by constricting the blood vessels.
The narrowing of the blood vessels causes the overall volume of skin to reduce, puckering the skin into these distinct wrinkle patterns. It’s like how a dried-out grape becomes a wrinkled raisin – it’s lost more volume than surface area.
This constriction of blood vessels also causes the skin to become paler – it’s the opposite of what happens when your skin gets redder when you get into a really hot bath, due to your blood vessels dilating. The color change is a little more obvious in people with lighter complexions.
