Did you ever notice how window treatments and carpets near windows fade over time? Most folks only think that it’s time for a new look, without considering why the materials faded. Ultraviolet radiation is the culprit, but many of us overlook that because we’re “safe” indoors. As you can see from your curtains, that’s not quite true. UVA radiation, between 315 and 400 nm on the electromagnetic spectrum, is the most prevalent UV type and has been linked to some skin cancers, cataracts and accelerated skin photo-aging. Of the total UVR that reaches the Earth’s surface, 96.5 percent is UVA. In addition, longer wave UVA rays penetrate the skin more deeply. Read More