You may need to replace your sunglasses more often than you think
Even if you love your current sunglasses, you still might need a new pair of shades.
It seems sunglasses' UV protection may deteriorate over time.
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According to a study from Brazil, current industry tests are not sufficient for determining how long it is safe to wear them.
Most Brazilians wear the same pair every day for about two years, the study notes, yet it has not been proven that lenses maintain the same level of protection after that type of exposure to ultraviolet radiation.
According to the Mirror you should look to replace your sunglasses every two years as sunlight has a detrimental effect on the lenses.
You should stay away from sunglasses that only say they 'absorb UV'. Lenses that say they have 99-100 percent UV absorption are a safer bet as they will block all harmful rays, according to Mercola.
Similarly the darkest lens colours don't always mean the most protection. Lighter colours can also provide the same service.
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