Answer:
Soap solution is a hypertonic solution i.e., more
concentrate than our skin cells. As we know, when the cell is immersed in a
hypertonic solution, water diffuse out of the cells by osmosis (diffusion of
water across semi permeable membrane), due to lower concentration of water
outside the ceil. As a result, the cell shrinks. The process is called
exosmosis.
During washing of clothes, exosmosis takes place in the
skin cells. This leads to shrinkage of skin over the fingers while washing
clothes for a long time.
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