All sunscreens are not created equal, which is why it’s especially important to choose a broad-spectrum sunscreen. A broad-spectrum sunscreen protects the skin from both UVA and UVB rays, and when used as directed, a daily-use facial sunscreen can help prevent the sun damage that contributes to premature signs of aging, as well as skin cancer.
UVA = AGING RAYS
UVA rays are consistently strong throughout the year and are responsible for the appearance of skin wrinkling, discoloration, and loss of elasticity. These rays can penetrate clouds, glass, and the upper layers of skin causing damage to valuable proteins like collagen and elastin that give the skin its volume and structure. UVA damage is a threat to the skin year-round, even on overcast days, when you are driving, or when you’re indoors near a window.
UVB = BURNING RAYS
UVB rays are stronger in summer, and in addition to being responsible for sunburns, they can contribute to skin cancer as well. They do not penetrate skin as deeply as UVA rays, but are also dangerous to the skin’s health.