Why does the skin of your finger shrink when you wash clothes for a long time?

Explanation

Soap solution is a hypertonic solution i.e., more concentrate than our skin cells. As we known, when the cell is immersed in a hypertonic solution, water diffuse out of the cells by osmosis (diffusion of water across semipermeable membrane), due to lower concentration of water outisde the cell. 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.