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The Science of Tanning

There's a lot of controversy surrounding tanning. Some people say a little sun is good for you (it's a source of vitamin D, you know), while others say you should stay in the shade to avoid skin cancer. But how many people really know what's going on in your skin to make you turn brown? Get the good on tanning here!

What is a Tan?

Melanocytes are special skin cells that produce melanin (skin pigment) when they are exposed to ultraviolet light in sunlight. The pigment absorbs UV radiation in sunlight, so it helps to protect skin cells from UV damage. Your body actually produces two kinds of pigmant. One is called eumelanin and it is responsible for the golden brown color we normally associate with tanning. Another pigment is called phaeomelanin and it produces a red color. Redheads and blondes produce more phaeomelanin and less eumelanin, which is why they don't tan as well.

How Does Your Body Know It's Sunny Out?

Sunlight (or UV light from tanning beds) affects the pituitary gland (a gland at the base of the brain that secretes hormones) which then produces MSH (melanocyte-stimulating hormone). This hormone flows through the bloodstream to the melanocytes, which makes them able to produce more melanin. Since the pituitary gland is tied into the optic nerve, (the nerve in your eyes that lets you sense light), wearing sunglasses makes you tan less. Weird.

Tanning and Race

Different races tan differently (and some don't tan at all). Caucasians (white people) and other lighter skinned races tan the way explained above. People of darker races produce melanin continuously (without having to go in the sun), which means their skin is always pigmented (dark) to varying degrees. People of dark races are much less likely to get skin cancer because their cells are constantly protecting them from UV radiation.

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What is the minimum SPF You Should Wear?

  • At least SPF 10
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  • I don't wear sunscreen

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esthery27 posted in Debating:
"simran88" wrote: "esthery27" wrote:I would rather be happy. It is much obvious that in this society nowadays smart people have the most advantages of being successful and socially acccepted based on their careers, position, personal success, fame, power and all that upper middle class stuff. But at the same time while being 'smart', they are also facing all kinds of stress and struggles such as trying the best at showing the perfect them to the society, mantaining all the success, fame and power all the time while the list goes on and on. But happy people on the other hand, or in other words, are happy because they live in the moment. They don't care , or don't need to care what others think of them because they are not living under the eyes and sayings of other people. They enjoy being themselves in their way. Although nothing is perfect, but they tend to make the best out of the many things. And they don't get easiy tired of trying to become the best of the bests, as most smart people tend to do.So if i would choose, i would rather be happy than smart. Well, then the 'smart' people you've spoken about are not really all that smart after all,  are they? Cuz if they were really all that smart they would've realised that they shouldn't care about what others think about them. Am I right? Great point ! Thanks for the reminder ! So what do you think about being smart or happy ? 
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unknownqueen posted in Debating:
"FroggyBurton" wrote:I would rather be Happy because I'm already smart XDAhahaha xD why haven't i thought of that? Same here same here
reply about 1 hour
unknownqueen posted in General:
Banned for using numbers to ban someone 
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HappyBaker posted in General:
Banned for posting 1309 times
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HappyBaker posted in General:
Lie on the floor and sing. He got it from me :PWhat am I?
reply about 3 hours

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