is an analytical technique that measures the absorption or reflectance of light by a sample in the ultraviolet (UV) and visible (Vis) regions of the electromagnetic spectrum. It is a widely used ...

The colors of the rainbow are all around us, but so are hues that most of us can't see, including ultraviolet — a wavelength that eludes many humans but, surprisingly, many animals can perceive.

Fortunately, a UV lamp helps speed up the dry time ... marketed as "better for you") is that they can radiate light that's on the UVA spectrum, which still poses risks of photo-aging.

the untinted and the light tint may give you a bit of a white cast, so it's best to go with the deep tinted SPF. Both the untinted and tinted versions of the EltaMD UV Clear Broad-Spectrum SPF 46 ...