No, human skin does not absorb water in a way that can rehydrate the body. The outer layer of skin is composed of stratified squamous epithelium, which acts as a barrier, preventing water from passing through. While water can enter the skin cells causing them to swell, it cannot penetrate deeper layers to contribute to hydration.
However, the skin does absorb some water, which is why fingers and toes wrinkle in water. This wrinkling occurs because the outer layer of skin swells when it absorbs water, causing it to pucker as it's tightly attached to the underlying skin.
While the skin can absorb water, it is not a significant source of hydration for the body. Drinking water is still the primary way to stay hydrated.
