Sunlight has UV photons that we humans can’t see but can damage our skin. There are UVB rays and UVA rays, UVB rays are short wavelengths and don’t get deep into our skin so they are the main cause of sunburn + skin cancer but UVA rays have a longer wavelength and go deep into the skin and are the cause of early aging. (1) The Sun can Harm us because the sun emits dangerous UV rays, luckily the ozone layer absorbs most of these UV rays but the ones that do get to the surface can be dangerous to our skin and can cause Sunburn and ,in worse cases , Skin cancer. SunBurn is reddening,swelling of the skin and can cause blistering and peeling of the skin, when you spend a long time outside on a sunny day and you are exposed to UV rays our
Some are sunscreens because they have chemical components that will absorb the sun's rays while others are sunblockers that actually repel rays. This lotion is a sunscreen that allows the sun to brown the skin without burning it. The SPF 4 lotion will not block or repel the sun except when it comes to sunburns. You'll need to reapply often if you want more protection. It's a great sunscreen for times you want to bake in the sun and deepen your current
The large star that we call the Sun can be very helpful by providing us with vitamin D which enlightens our mood and keeps us optimists. Although in some cases sunlight exposure, especially too much of it can be very harmful to our health and skin. There are many different irritations that can be caused from too much sunlight, one of the most popular and common is sunburn. There was a survey and over one third of adults and up to 70% children had said that they have had sunburn in the past year (according to the cdc) 1. Sunburn is when your skin reddens, maybe swells up and sometimes even the blistering or peeling of the skin.
Also, there's a limit of protection that melanin can provide and that limit is higher in people with darker skin. The problem with someone's skin "getting darker" is there can be some damage that is being done. Some of the damaging effects of UV radiation is it can damage you're DNA, it can promote burns, and most commonly it promotes skin cancer. There are pros and cons about your skin getting darker, but I'd say it's safe to say wearing sunblock is always a good thing. My skin is darker because the melanocytes in the basale layer of epidermis are producing melanin to try to protect me from the harmful UV rays of the sun.
This is due to a series of harmful biochemical reactions occurring in a process known as photoaging. Chronic or prolonged solar damage negatively affects the dermal connective tissue and skin metabolism. It also depresses immunity and increases inflammation through the production of MMPs which degrade collagen and cause a loss of skin suppleness (Taihao 2009). Pollution is another factor influencing skin ageing (Vierkötter 2010). Recent studies have correlated particle pollution with advanced ageing in humans.
Another way to prevent UV exposure is by wearing a brimmed hat (as Ultraviolet light can still enter through the side of sunglasses).7 Epidemiology Males and females are equally at risk of getting snow blindness. There has also been no reported cases of mortality with this condition.8 Conclusion Photokeratitis or snow blindness, is a condition that causes eye pain in which the symptoms the begins 6 -12 hours after exposure. In this condition, the outer surface layer of the cornea loses epithelial cells and thereby exposes the subepithelial nerve endings. Upon examination, there is eye injection and oedema. Fluorescein staining may also show punctuate corneal staining.
With outdoor tanning you can prevent the intake of UVB and UVA rays by properly using sunblock but in tanning beds you cannot. Tanning beds should be called coffins. Tanning beds emit more UVA rays and the longer UVA rays penetrate the skin deeper. They also break down collage and elastic tissue and this causes rapid aging of the skin. You may think you look good when you are tan but you certainly won’t when you skin become very wriggled and saggy.
Intrinsic factors and extrinsic factors, both contribute to this process. As discussed earlier, UV-induced damage to the DNA causes a poor renewal of the skin. When exposed to harsh sunlight, an individual is also exposed to the UV light that comes along with it. Excessive exposure can cause premature aging in certain individuals and also is observed as severe pigmentation and sunburns as well. The antioxidants, namely vitamin E and vitamin C are majorly targeted by the UV light and thus, reduce the antioxidant capacity of the epidermis on prolonged exposure.
45. Sunblock It doesn’t matter what skin tone you have or what the weather is like, you should always apply sunblock before you head out, and go for an SPF 30. 46. Upgrade Your Eyewear Whether you wear glasses or contacts if you haven’t had your eyes checked a while you could be squinting unnecessarily. Instead of risking fine lines around your eyes, make the optician an annual thing.
Sometimes, the sunrays can penetrate through the sun screens. Sunburns are treated using Aloe Vera gel. This gel is a good cooling agent that can reduce the skin redness and pain. It forms a protective layer that can reduce further damage to the skin. Heals the wounds The topical application of this gel helps in healing the cuts and wounds, insect bites and dermatitis.