The sun does not only emit heat and light, it also emits UV rays which can be very harmful to us. The UV rays are comprised of UVA, UVB and UVC. UVC rays are absorbed by the ozone layer and do not reach the earth. However, both UVA and UVB penetrate the atmosphere and play a major role in causing conditions such as sunburn, premature skin ageing, and skin cancers.
UVA rays (A for Ageing) are present all year round. They cause ageing, hyperpigmen...
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