can u please tell me how the sun causes damage to the skin whith four sentences
203808
solar radiation - UV rays are damaging to the DNA of skin cells and can result in cancer
171883
Best bet is to keep yourself hydrated-drink TONS of water! Also, take cool (but short!) showers to keep yourself comfortable and apply lots of lotion (you can mix aloe into your lotion to have a more soothing affect). Be sure your lotion isn't fragranced or it will hurt!\n\nTaking an over the counter such as ibuprofen will help with swelling and pain.\n\nAlso, you can buy Lidocaine to help numb the pain and cool the skin. Good luck, and remember the best remedy for sunburn is prophylaxis: Use Sunscreen!!
225524
Go to the store and buy a sunburn ointment. It'll help alot. Also, buy some spray-on Aloe-Vera= it'll make your skin feel cool when you rub it on.
162870
black u get a better sun tan
7954
The Sun's outer visible layer is called the photosphere and has a temperature of 6,000°C (11,000°F). This layer has a mottled appearance due to the turbulent eruptions of energy at the surface. \n\nSolar energy is created deep within the core of the Sun. It is here that the temperature (15,000,000° C; 27,000,000° F) and pressure (340 billion times Earth's air pressure at sea level) is so intense that nuclear reactions take place.
110471
http://www-medlib.med.utah.edu/kw/derm/pages/ac04_8.htm
605394
You really do need to see a doctor for this, to rule out any serious conditions.  \n\nIt may very well be you are just extra-sensitive to the sun, and to heat.  Some people are, regardless of race.  Also, if you are on any medications, ask your pharmacist if any of them might cause an increased sensitivity to sunlight/heat.\n\nOne reason you need to see a doctor is that a disease called Lupus makes people very sun-sensitive.  There are other symptoms involved as well, and a doctor will be able to tell you if you have it or not.  If you do, it is important to have appropriate ongoing treatment so it doesn't get worse and so that it affects your life as little as possible.  If your doctor determines you do not have lupus, s/he will at the least be able to give suggestions for enduring hot sunny weather more comfortably.
140121
Melanin production requires sun exposure, and sunblock actually blocks UV radiation.  So there is a correlation. While melanin production has a protective effect against the sun, sun block is far better.  Exposure to multiple severe sun burns during childhood and young adult greatly increases the odds of melanoma.  Melanoma is just about the worst cancer you can get, it's very difficult to treat and has a very high mortality.  I'd wear the sunblock and look forward to a long life.
210188
Peeling skin from a sunburn is the body's natural way of ridding itself of dead or damaged skin.  The skin underneath is going to be a healthier batch that needs the lotion or aloe vera.  If you've started peeling, just gently remove the skin and apply lotion or aloe.  This is probably the healthiest way to allow your skin to heal.
193528
the UV waves cause heterolytic fission of chemical bonds creating "radicals" which are very reactive species.  They will react with pretty much anything.  The UV radiation is therefore breaking down the skin and the colour molecules in paint and clothes, making them look like they are losing their colour.  The purpose of sun-tan lotion is not only to stop the UV radiation getting to your skin, but also to mop up all the free-radicals formed before they do any damage.  Skin cancer is caused by this process.  You are essentially changing the structure of the skin.
632896
Although the concentration of ozone in the ozone layer is very small, it is vitally important to life because it absorbs biologically harmful ultraviolet (UV) radiation emitted from the Sun. UV radiation is divided into three categories, based on its wavelength; these are referred to as UV-A, UV-B, and UV-C. UV-C, which would be very harmful to humans, is entirely screened out by ozone at around 35 km altitude.\n\nUV-B radiation is the main cause of sunburn; excessive exposure can also cause genetic damage, resulting in problems such as skin cancer. The ozone layer is very effective at screening out UV-B; for radiation with a wavelength of 290 nm, the intensity at Earth's surface is 350 million times weaker than at the top of the atmosphere. Nevertheless, some UV-B reaches the surface. Most UV-A reaches the surface; this radiation is significantly less harmful, although it can potentially cause genetic damage.\n\nDepletion of the ozone layer would allow more of the UV radiation, and particularly the more harmful wavelengths, to reach the surface, causing increased genetic damage to living things.\n\nDNA sensitivity to UV\nTo appreciate how important this ultraviolet radiation screening is, we can consider a characteristic of radiation damage called an action spectrum. An action spectrum gives us a measure of the relative effectiveness of radiation in generating a certain biological response over a range of wavelengths. This response might be erythema (sunburn), changes in plant growth, or changes in molecular DNA. There is much greater probability of DNA damage by UV radiation at various wavelengths. Fortunately, where DNA is easily damaged, such as by wavelengths shorter than 290 nm, ozone strongly absorbs UV. At the longer wavelengths where ozone absorbs weakly, DNA damage is less likely. If there was a 10% decrease in ozone, the amount of DNA damaging UV increases, in this case, by about 22%. Considering that DNA damage can lead to maladies like skin cancer, it is clear that this absorption of the Sun's ultraviolet radiation by ozone is critical for our well being.\n\nAmount of ozone\nThe "thickness" of the ozone layer—that is, the total amount of ozone in a column overhead—varies by a large factor worldwide, being in general smaller near the equator and larger as one moves towards the poles. It also varies with season, being in general thicker during the spring and thinner during the autumn. The reasons for this latitude and seasonal dependence are complicated, involving atmospheric circulation patterns as well as solar intensity.
312669
its something in the genes.\nwhen the skin is bombarded with UV rays it has a reaction in the cells that cause it to create the pigment that makes you tan and prevents burning, this is all as a protection. but with some people the cells aren't as sensitive as they should be, which causes people with fair skin that burn very easily or people who don't seem to tan at all.\nIn the case of albinos, they have no pigments whatsoever and can burn quite easily if exposed to the sun for too long, they do stand a higher chance of getting cancer if they have repeated exposure to the sun. this is why albino's choose to live in a temperate climates, like England, where it's not always sunny every day and some go out only at night in the summer, the invention of the 24 hour supermarket was a blessing for them. Albino's though are quite rare.
475015
Sunshine enhances the absorption of Vitamin D which increases dopamine and serotonin levels in the brain and body.
333919
These are the effect of intense sun light on fruits.These balck spots are sun burns on fruits,where the fruit tries to protect it from sun by changing it's color.
49160
The one about the girl who was tanning non-stop in tanning beds for like a week to look good in time for her upcoming wedding. She passed out, and basically dropped dead. They smelled something similar to meat burning and they found out she "cooked herself" from the inside out.
61563
It is a fact that when ultraviolet light touches your skin it causes your body to naturally produce vitamin D. Vitamin D has been linked to treat and/or prevent many diseases and conditions. For example, Dr. Holick Professor of Medicine, Dermatology, Physiology, and Biophysics at the Boston University Medical Center has found substantial evidence that the Vitamin D you get from tanning can help with the following diseases and conditions:\n\n    * Breast Cancer\n    * Colon Cancer\n    * Depression (Nonseasonal)\n    * Fybromyalgia\n    * High Blood Pressure\n    * Multiple Sclerosis\n    * Osteomalacia\n    * Osteoporosis\n    * Premenstrual Syndrome (PMS)\n    * Prostate Cancer\n    * Psoriasis\n    * Rheumatoid Arthritis\n    * Seasonal Affective Disorder (SAD)\n    * Type 1 Diabetes\n    * Type 2 Diabetes
606733
You got a severe case of sunburn. Freckles is your skin's way of trying to protect itself from geting severely burned. Please use SP40 sunscreen, waterproof next time. If you do not, your skin will eventually wrinkle and you could get skin cancer, of which would NOT be good.