Scientists think that they have the answer to why the skin on human
fingers and toes shrivels up like an old prune when we soak in the bath. Laboratory tests confirmed a theory that wrinkly
fingers improve our grip on wet or submerged objects, working to channel away the
water like the rain treads in car tires.When a person stays in a
water bath for a prolonged time,
osmosis occurs and the
water flows into the upper skin cells, which then take up the
water. Shrinking and expanding effects take place simultaneously in these skin cells, causing
wrinkles. The wrinkling effect mostly pops up on the thickest layer of the skin.
