If you take a long nice bath and you notice your skin is starting to look weird and wrinkly what is happening to your skin cells?

When you soak in a long bath, your skin absorbs water, causing the outer layer (the stratum corneum) to swell. This swelling leads to the skin's surface becoming wrinkled and less taut, giving it a "pruney" appearance. This phenomenon is a temporary response to prolonged exposure to water, and once you dry off, your skin will return to its normal texture as it loses the excess moisture.