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"If you have ever sat in the bath and wondered why your fingers go wrinkly when wet, it is because the dead outer layer of your skin is made up of matrix-like structures called corneocytes. They let the skin absorb water easily when wet, yet quickly become much less permeable to moisture when conditions are dry. Physicists in Germany have now modelled a corneocyte and carried out calculations to see how its volume changes as it takes up water. As well as providing important information about how our skin reacts to its surroundings, the new work could help researchers to develop new materials, such as fabrics, that mimic the properties of skin."
