That daily use of sunscreen seems to protect against skin aging.
Information about the LIGHT SPECTRUM
Ultraviolet C (UVC) -100-290nm (nanometers)
These wavelengths are the shortest ultraviolet rays, extending from 100nm to 290 nm, and are the most carcinogenic, but rarely reach the Earth's surface.
Ultraviolet B (UVB) - 290nm - 320 nm
These are the intermediate wavelength of ultraviolet rays and cause the intial appearance of redness, commonly called "sunburn". UVB wavelengths are known to cause skin cancer. SPF is only associated with UVB exposure.
Ultraviolet A (UVA) - 320 - 400 nm
Though once thought to be essentially harmless, contributing only to a "healthy tan" these longer UVA wavelengths, (near-UV) are now known to represent 90% of harmful ultraviolet rays raching the Earth's surface causing skin cancer, wrinkling and other signs of premature aging.
Visible Light (400nm - 760 nm)
Nearly 50% of the sun's radiation, reaching us at sea level, is within the visible range. Infrared - "IR" (greater than 760nm to 1,000,000 nm) from above 760nm to infinity, but most of the energy is from 760nm to about 1800nm, comprising more than 40% of the sun's rays reaching us at sea level.
Sunscreen Vs. The Living Ocean…A losing battle
Most marine animals are mass spawners. Their eggs are positively buoyant and float to the surface. When the eggs hit a layer of sunscreen they’re pretty much toast. Your choices can help to conserve this fragile ecosystem for years to come. By promoting viral infection, sunscreens can potentially play an important role in coral bleaching in areas prone to high levels of recreational use by humans.”
The study is the latest to highlight the extent to which tourism is damaging coral reefs. According to the Worldwide Fund for Nature, a quarter of the world’s coral reefs are at imminent risk of collapse through human pressures; a further quarter is under a longer-term threat of collapse.
Even low levels of sunscreen can trigger the virus, which can decimate a coral bed in as few as four days.
For More info: http://www.care2.com/greenliving/swimmers-sunscreen-kills-coral.html#ixzz1xsTucBgB
Twenty thousand tons of sunscreen wash off swimmers, divers, and surfers into the oceans every year, eventually affecting marine life, according to a 2008 study published in Environmental Health Perspectives. And coral reefs are getting especially creamed. Researchers say sunscreens with octinoxate, oxybenzone, parabens, or camphor derivatives are killing hard corals.
For more info go to: http://www.care2.com/greenliving/10-disturbing-sunscreen-secrets.html#ixzz1xhsRLed8
Dr. Warwick L. Morison, a professor of dermatology at Johns Hopkins University and chairman of the photobiology committee for the Skin Cancer Foundation, said in the Times article that he was disappointed that the F.D.A. failed to ban SPF numbers higher than 50 because such products expose people to more irritating sunscreen ingredients without meaningful added protection.
For More Info: http://www.care2.com/greenliving/fda-announces-new-sunscreen-rules.html#ixzz1xhujxn8r
Use safe sunscreen – one that doesn’t leave a “footprint”. Paraben, cinnamate, benzophenone and a camphor derivative used in these UV skin protectors are seriously endangering the ocean’s coral. Avoid these ingredients and keep the fish safe, too.
For more info: http://www.care2.com/greenliving/an-eco-friendly-day-at-the-beach.html#ixzz1xmC1OLst