Your skin has cells called Melanocytes, which uses the amino acid tyrosine (also an added ingredient in indoor tanning lotions) to produce melanin which is the protein that turns brown and gives your skin a tan color. Everybody has about the same amount...
Whether you enjoy laying in the sun on the beach, or hopping into a warm sunbed for a quick catnap the ratio of UV light is roughly the same. Both the natural sun and tanning units have a ratio of approximately 95% UVA...
Vitamin D is known as the Sunshine Vitamin because your body will naturally produce Vitamin D when your skin is exposed to UVB. Vitamin D is known to be responsible for regulating the minerals calcium and phosphorus. Vitamin D also plays a role...