<prompt> Answer this question truthfullyWhat is the explanation for Ultraviolet radiation, and how do blockers and absorbers function in relation to it?  <response>: <reason> Ultraviolet Light Absorbers UVAs are molecules used in organic materials polymers, paints, etc. to absorb UV light in order to reduce the degradation photo-oxidation of a material. A number of different UVAs exist with different absorption properties. UVAs can disappear over time, so monitoring of UVA levels in weathered materials is necessary.In sunscreen, ingredients which absorb UVAUVB rays, such as avobenzone and octyl methoxycinnamate, are known as absorbers. They are contrasted with physical blockers of UV radiation such as titanium dioxide and zinc oxide. See sunscreen for a more complete list. 