How thick is skin?

The thickness of skin varies, depending on where it is found on the body. Skin averages 0.05 inches (1.3 millimeters) in thickness. The thinnest skin is found in the eyelids and is less than 0.002 inches (0.05 millimeters) thick, while the thickest skin is on the upper back (0.2 inches or 5 millimeters).