What is the difference between a UVA and a UVB ray?
On a daily basis, we are constantly exposed to 2 groups of UV rays emitted by the sun: UVA and UVB. – UVA rays are lower in energy than UVB, but at least 20 times more abundant (represent 95% of the radiation that reaches the surface of the planet). Unlike UVB rays, they are present the whole year round in all parts of the world, and can pass through the clouds and even windows. UVA rays cause deep tissue damage and may increase the risk of developing skin cancer, combined with UVB exposure. There are two types of UVA rays, long and short. – UVB rays reach the earth in relatively low amounts (making up only 5% of UV radiation reaching the earth,) but are higher in energy and therefore have immense damaging effects. UVB rays are partially blocked out by the ozone layer and partially absorbed by the clouds. UVB rays are mainly responsible for sunburn. Vichy Capital Soleil SPF 15 sunscreen for Face and Body with Mexoryl SX provides comprehensive protection against both type of UV rays, in
