Broad spectrum sunscreens protect against two types of sun rays that penetrate our atmosphere and are damaging to skin health.
UVA = AGING RAYS
UVA rays are consistently strong throughout the year and are responsible for the appearance of skin wrinkling, discolouration, and loss of elasticity. They can penetrate clouds, glass, and the upper layers of skin causing damage all year long, 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, causing sunburns and skin cancer. They do not penetrate skin as deeply as UVA rays, but are just as dangerous to skin health.