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.
For the maintenance of an elastic skin and for the rejuvenation of the skin, the body needs the vitamins such as the A and E oil soluble group. With particular regard to the elderly, with dry and itchy skin, the vitamin E is most beneficial as a supplement.f there is not reduction in the itching sensation in the skin even after a regimen of the A and E vitamins, the B complex vitamins can be included in the supplement. The nervous system fights off a number of infections of the skin making use of the B vitamins in the body.