Although there are many theories that explain this phenomenon, most scientists agree that the tough outer layer of skin is responsible. According to the dermatology health guide from the University of Maryland Medicine, this outer layer made up of dead Keratin cells, swells when we are in the shower because it absorbs water. Since it is tightly attached to the skin underneath, it compensates for the increased area by wrinkling.
Why does this happen to our hands and feet and not to any other part of our body? Because our hands and feet have the thickest layer of Keratin Cells. This can be explained by the fact that the skin in our hands and feet has to be much more resistant than the skin in any other part in our body.
Ana Cristina Sosa Morasso
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