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Why do your hands wrinkle (feet sometimes) when you are in water for a long time?

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I actually know the answer to this one...when you have been in the water for a long time, your skin actually is ridding itself of moisture, which wrinkles the skin. The skin then has more grip, so you could pull yourself to safety if necessary. It's a built in safety feature we have. 8)

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Someone said something below about Osmosis.
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Be cause it gets to wet so it starts to absorb the water

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Yeah but why ?
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I agry your skin is dead cell that aborb water.
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It is called The Pruning Factor...and in science it is caused by the Molecular changes of the skin when over hydrated, causing the cells of the hands and feet to shrink and wrinkle under the pressure to breath..yes skin breathes...so next time you swim wear gloves and booties and this will not happen....your Pruned Hands and feet will thank you....

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Ok. I don't think kuuipo's answer is correct at all. Here is an article from a link explaining a reason. One of many why your skin Wrinkles. Its not a safety feature. We aren't frogs. :|


http://www.discoverymagazine.com/digger/d01dd/d0110dd.html

After spending about half an hour soaking in a nice, hot bathtub you look down at your hands and feet and realize that you have been attacked by a case of wrinkly, raisin skin. Especially the tips of your fingers and toes have shriveled up like prunes. What happened to your skin to make it wrinkle?

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Your skin is made up of two layers. The outer layer is called the epidermis and the lower level is the dermis. The outer layer (epidermis) produces an oily substance called sebum. You can see this substance when you touch a window or mirror and your "oily" fingerprint is left there. One job sebum does is it keeps water out of your skin?a job that it does very well. However, after long periods of time in a swimming pool, shower, or bathtub, much of the sebum is washed off and your outer layer of skin starts to absorb water. As it absorbs water it swells, but since the epidermis is "tied" down to your dermis in certain spots, it expands more where it is not "tied" down and this causes your skin to wrinkle. The difference between your skin and a raisin is that raisins wrinkle because they shrink, but your skin wrinkles because it is getting bigger.

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You just said "we aren't frogs" and you reminded me that today in science we dissected a frog?.(shudders)
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So why is it only our hands and feet that do this? Not the rest of our skin?
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dustee
green
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FrederickMayes.....that's absolutely downright freaky. It's almost on par with having bugs living in the cuticles of your eye lashes.
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It absorbs the water after long periods of time making it have that wavy effect to your skin. If you don't know how you absorb it.... You absorb the water through your pores.

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i absorbs the water

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Moisture.

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thank you for answering my question i agree with everyone above

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So this guy with a Japanese sword comes in the bar. And he sees you all naked. So he wrinkles you. And that's why your wrinkled. OH aimnearly forgot. He was crying.

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sfok
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Because of the diffusion of water in the fingers.....

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complete saturation.

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Because of osmosis and diffusion. Water wants to be where there is a higher molarity therefore it diffuses from your pores and causes you to wrinkle.

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Sounds about right.
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Just completed college Biology II. That's the only reason I know ha :)
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