why hands wrinkle in winterThis is one of the most common questions people ask – why do finger and toe skin wrinkle, but other parts of our body don’t? The reason for this is that our skin is the thickest near the top of fingers and tops. A big fraction of the thick skin is created by dead keratin cells which absorb water and swell up. The layer of dead cells is directly attached to the living tissue and the wrinkles are caused by the body’s attempt to compensate for the increased surface area.