What is UV radiation?
Emissions from the sun include light (visible radiation),
heat (infrared radiation) and UV radiation. We cannot see or feel
UV radiation is made up of UVA, UVB and UVC. As sunlight
passes through the atmosphere, all UVC and 90% of UVB is absorbed
by ozone, water vapour, oxygen and carbon dioxide. UVA is not filtered
as significantly by the atmosphere.
What are the differences between UVA and UVB?
UVA accounts for 95% of the UV radiation reaching
the earth's surface. It can penetrate deeper layers of skin than
UVB, is responsible for immediate tanning, and contributes
to skin ageing and wrinkling. For a long time it was thought that
UVA could not cause any lasting damage. However, recent studies
strongly suggest that it may enhance the development of skin cancer.
UVB is responsible for delayed tanning and burning;
in addition to these short-term effects it enhances skin ageing
and significantly promotes the development of skin cancer.
Our products offer the maximum protection available
with a UPF50+ rating, which means they block out over 97.5% of all
UVA and UVB radiation.
Ozone depletion and UV radiation.
The continual depletion of the ozone layer means that
the protective filter activity of the atmosphere is being progressively
reduced. Consequently people are being exposed to increasingly higher
levels of UV radiation, especially UVB.
For further information about UV radiation:
Refer to World Health Organisation "What