Over years of exposure to the skin, the sun can have an effect on the skin that can cause premature aging, skin cancer as well as other skin changes. Prolonged exposure to the sun is linked to many skin changes that were commonly believed to be due to aging, like...

When considering a sunscreen to purchase, one of the most important factors to look for is the correct SPF. SPF, or Sun Protection Factor, is a laboratory measure of the effectiveness of sunscreen. The higher the SPF, the more protection against UVB a sunscreen offers.   Specifically, the SPF is...

Ultraviolet, or UV, light is electromagnetic radiation with a wavelength shorter than that of visible light. It got its name because the spectrum consists of electromagnetic waves with frequencies higher than those that humans identify as the color violet. UV light is found in sunlight and emitted by electric arcs...