Your skin is in need of sunlight to make and produce a vitamin which is Vitamin D and this has been found to be very essential and important for the formation of bone. You should usually sit in the sun and bask for 5 to 15 minutes two to three times a week to get the sufficient amount of vitamin D that your body needs. There are cells present in the outer layer of your skin that contain melanin which is pigment that is responsible for the protection of your skin from the harmful ultraviolet (UV) rays which is produced by the sun and when people get out in the sun to get the proper exposure of sunlight and sufficient production of vitamin D in their body, doing this they sometimes get overexposure of the sun or indirectly the overexposure of UV that leads to this condition of tan that happens because of the overproduction of melanin. The tan on the skin gets removed or disappears when your skin surface has formation of new cells and the cells which were tanned they just shed off.
This condition of skin tan can be considered as a sign of sun damage, further there is nothing like healthy tan as getting any kind of tan does not provide you any kind of protection from sunburn or any other skin damage.
The cause of this condition of skin tan is the overexposure of the skin to the harmful ultraviolet (UV) rays or radiation which is responsible for the enhanced production of melanin to protect the skin from receiving any kind of damage. Melanin is a pigment which is considered to be responsible for the imparting of color to various parts of the body which includes skin, eyes and hair. This increased production of melanin causes or leads the skin to become dark and this condition only is referred to as tanning.
Ultraviolet or UV rays are a kind of radiation that comes out of the sun and reaches the surface of the earth and this radiation has two different forms that are known to reach the surface of the earth and they are UVA and UVB. Among the two UVB rays is responsible for the cause of sunburn whereas the other one UVA ray is known to travel inside the skin and cause much more damage. Melanin is known to be produced in our body for the protection of the skin from the UVA radiations and this is the only reason which leads to the darkening of the skin in the first place and this is why you get a tanned skin.
When your skin is exposed to the harmful radiations coming out of the sun for 48 hours and after this your skin will start to darken and this is considered as the main symptom of skin tan.
There are so many home remedies available that can help you to get past this problem of skin tan and some of the most effective treatment are listed below:
Tanning of the skin is considered as a response of the skin to the ultraviolet exposure and the skin starts to overproduce melanin for the protection of the skin to stay from the damage induced by the UVB radiation. You can go for certain home remedies that can help you to get rid of this condition of tan very safely and easily. You can go for various products like saffron, coffee and green tea which will get you past this problem of tan for good and you can also help yourself from this problem by limiting your time of exposure to the sun.