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.
Up to 5,000 IU of vitamin A a day helps rejuvenate the skin and open pores. Vitamin B12 supplements are important if you take Accutane, Retin-A, Tazorac, or Differin. But donât take too much. Excessive vitamin B12 itself can also make your skin break out. Vitamin C and vitamin E applied directly to the skin can stop the formation of brown spots as acne heals. Selenium and zinc help âcalmâ the skin.