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What is the difference between UV-A and UV-B?

April 26, 2017uv-a UV-B

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What is the difference between UV-A and UV-B?

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Ultraviolet radiation is made up from different components, including UV-A and UV-B. UV-B is a more powerful tanner than UV-A, and can cause sunburn. However, a small dose of UV-B is essential to induce the pigment forming cells to start producing melanin. UV-B also ensures a thickening of the skin providing optimum protection against the rays from the sun.