(or ultraviolet filters) is the name given to the chemicals added to sunscreens that are able to absorb or block some of the sun’s UV radiation. When deciding how to choose a good sunscreen it's important to think about whether your sunscreen has the right UV filters and make sure you know which UV rays they can protect against.
UVA, UVB and UVC rays
Sun exposure can lead to UV radiation exposure, which can be categorised into the three types:
UVA rays -
Penetrate deep into the skin dermis layer and often cause damage that can lead to skin ageing
. These rays can also indirectly lead to cancer, as they damage the proteins responsible for repairing DNA mutations.
UVB rays -
Are the rays responsible for causing sunburn. UVB rays have the ability to directly damage your DNA and over exposure to these rays can sometimes lead to skin cancer.
UVC rays -
Are known as the most dangerous of the three, but don’t panic, you don’t need to worry about these types of rays as the atmosphere's ozone layer blocks them.