How A Sun Tanner Works
by Haywood Hunter
A sun tanner is a device or a product utilized to tan or to darken the skin color. The process is normally as a consequence of exposure to ultraviolet radiation from the sun or artificial sources. Tanning beds are the major artificial sources of ultraviolet radiation used. This effect can also result from reflected light, chemical products, or windburn.
Deliberate tanning is done by engagement in sun bathing while casual unintended exposure to sun beams may have unfavorable effects along some benefits. Benefits include synthesis of vitamin D by the skin. Excess exposure causes sunburns, possible skin cancer, depressed immune system function, and possible early aging. Sunscreens are applied to avoid sunburns on the parts of skin exposed to sun or sun tanner equipment. The tanning process can also be accelerated by using certain oils.
Tanning process varies among individuals, with some people changing skin color more easily and fast than others. This is due to differences in natural skin color and skin type. These two factors are a result of genetics.
Melanin is produced by cells, which lie within the deepest layer of the skin called melanocytes. This process is referred to as melanogenesis. Melanocytes generate two kinds of melanin, that is pheomelanin and eumelanin. Pheomelanin is red in color while eumelanin is dark brown. The job of melanin is to protect the internal body organs by absorbing solar beams. Solar beams cause direct or indirect damage to DNA strings, which must be combated by the body through secretion of melanin.
With increased production of melanin, the color of the skin darkens, even though the UV-B may cause sunburn effect. This tanning effect may also be achieved using artificial ultraviolet sun tanners. The artificial sun tanner equipment delivers UV-A, UV-B, or both. Production of a tan through exposure to UV happens in two different ways. To start with, UV-A rays create oxidative stress that oxidizes the already present melanin in turn. Once oxidized, the melanin turns dark brown in color.
The radiation form the sun tanner also redistributes melanin from its place of storage, but its original amount remains constant. The second procedure is triggered primarily by UV-B beams. There is an increased rate of melanogenesis resulting in more melanin. This whole reaction is due to direct photodamage by UV radiation. Melanogenesis holds up the tanning process, which becomes visible after 72 hours after the initial exposure. The tan generated by increased rate of melanogenesis is more durable than that due to oxidation reaction. It protects against skin damages more than simple cosmetic function like in UV-A beams.
The sun tanner utilized to produce artificial ultraviolet radiation beam is casket-shaped. One lies in the sun tanner and ultraviolet beams are showered on their entire body. There is a set period that one has to last in a sun tanner. Beyond that period, the radiation becomes excessively destructive. The sun tanner contains a lead, on which the sources of rays are placed.
A sun tanner is an expensive equipment depending on the make one needs to buy. The difference may not be so pronounced because they all have the same effects and achieve the same results. Always compare prices before making a purchase. A sun tanner could be made into several different designs, shapes, and sizes.
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New Unique Article!
Title: How A Sun Tanner Works
Author: Haywood Hunter
Email: slchats@aol.com
Keywords: skin care,beauty,sunless tanning,tanning,health issues,general health,cosmetics,skin,bronze,natural
Word Count: 545
Category: Beauty
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