Why does your skin shrivel?
Name: Timothy T Lenczycki
We have been talking about osmosis recently, and I'm sure this
is connected, but I haven't been able to figure out the mechanism. Why
does your skin shrivel in the bathtub?
It's the other way around. The outer dead layer of your skin
absorbs water in the tub and swells. Like clothes that are too big for
you, it is then too big for the finger it covers, and folds into wrinkles.
You'll note that the skin also becomes softer and more pliable, also
indicating that it has absorbed water.
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Update: June 2012