How It Works: Sunburn

by **rx_force** Wed Apr 08, 2009 9:57 pm

It's a little more complicated than a simple heat-and-char process. Immediately after sun exposure, you'll see some pink skin: That comes from dilation of the capillaries in reaction to ultraviolet B rays. ''The actual burn you see later comes from a series of chemical reactions,'' says Dr Mehmet C. Oz. Mast cells in the skin release chemicals like histamine and serotonin, triggering more chemical production and inflammation. Within 12 hours, skin cells begin to die, and inflammation turns the skin a darker red.

UV radiation damages your DNA, setting you up for possible skin cancer and suppressing immunity. But your skin does try to fight back. As soon as you're exposed to UV radiation, cells called melanocytes release melanin pigment that blocks UV rays – in the form of a tan that can reflect UV light. You've heard it before, but it bears repeating: To prevent burns, use a sunscreen that blocks both UVA and UVB rays, and reapply often.

by **gone_the_force** Wed Apr 08, 2009 11:10 pm

good ! cz.rx....people who have sunburn exposure to the sun or are partial to tanning greatly increasing their risk of developing skin cancer..this specially true if tanning occurs over a period of years,because damage to the skin accumulates.also,premature aging of the skin with wrinkles will occur in everyone who is reapeatedly exposed to the sun over a long time...

by **gone_the_force** Wed Apr 08, 2009 11:43 pm

cont's...to stay safe from natural sun,stay indoors during times when rays are at their strongest (late morning to mid afternoon ),wear long sleeves,pants,a hat,and other clothing to protect your skin...and apply sunscreen ( with an SPF of 30 or higher) daily to skin that is exposed,such as your face,hands,ears, and feet.tanning salons should also avoided..lemon juice is widely believed to have many benefits for skin,any fruit containing hydroxy acids facilitate the shedding of surface cells,thus giving older skin a youthful rosy glow.they are naturally found in apples and pears ( malic acid) oranges and lemons (citric acid) and grapes (tartaric acids).