* Dry Skin: Dry skin has a layer of dead cells (the stratum corneum) on the surface. These cells are not very conductive and act as an insulator, significantly increasing electrical resistance.
* Wet Skin: Water contains ions that can conduct electricity. When skin is wet, water penetrates the outer layers of the skin, filling the spaces between cells and hydrating the cells themselves. This provides a pathway for electrical current to flow more easily, thus lowering the resistance.
In simpler terms: Think of dry skin like a road with lots of potholes and gaps (high resistance). Wet skin is like a smooth, paved road (low resistance).
Important Note: Lower resistance means electricity can flow more easily through wet skin, which is why electrocution is much more dangerous when skin is wet.