Ok listen to this,
Why is it when our body drinks lots of water it becomes hydrated and moisturized, But when you have water constantly on your skin, (hands, face, lips) it dries it out? Is their some kind of difference of water in the body and out of the body?
Michel Verheughe
Favorite Answer
I don't see why water on your skin should dry it out. Unless it is e.g. sea water. Sea water is more dense than fresh water and if you stay a long time in sea water, you will loose body water by osmosis.
Osmosis is the fact that a fluid of a lesser density will be attracted by a fluid of higher density.
This can, for example, be seen on the hulls of fiberglass boats where small pockets of polyester solvant attract the sea water from outside. Osmosis makes it able to go through the layer of gelcoat. As a result, blisters are formed on the hull after a while.
Likewise, sea water can drain out fresh water from our body. But not fresh water as it has the same density.
don_sv_az
Your skin contains a very light oil. This oil helps keep the moisture in the skin. When in contact with lots of water some of the oil is washed away. With the oils washed away more moisture is lost from the skin than if the oils were still there.
Lexee
To my knowledge, there is no difference. Unless something like salt, or sugar is in the water, it shouldn't make a difference. Sugar and salt draw water out of our cells, when it is supposed to be in the cell. If you want some more information look up these: diffusion, osmosis