The Earth's Crust is like the skin of an apple. It is very thin in comparison to the other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the oceans(oceanic crust) and about 25 miles (32 kilometers) thick under the continents (continental crust).
The problem behind your itchy skin might be insufficient vitamin intake. There are a number of vitamins that promote the hydration and healthiness of your skin. A shortage in these could trigger itchiness, dry skin and other skin conditions. Alternatively, an overdose of such vitamins might also lead to itchy skin.
The best vitamins for dry skin are :-. Vitamin A: one of the symptoms of deficiency of this vitamin is dry, rough, scaly skin. Unfortunately high doses can be toxic and too much leads to the same kind of skin problems you get with a deficiency.he best vitamins for dry skin are :-. Vitamin A: one of the symptoms of deficiency of this vitamin is dry, rough, scaly skin. Unfortunately high doses can be toxic and too much leads to the same kind of skin problems you get with a deficiency.