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Whats the difference between UVA and UVB rays?

April 26, 2017difference Rays UVa UVB

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Whats the difference between UVA and UVB rays?

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UVB rays burn the topmost layer of skin, causing sunburn and cell damage that can lead to cancerous changes. Sun protection factor (SPF) measures the strength of a cream’s sun filter against UVB rays. Sunscreens with a high SPF factor should not lead to you staying in the sun for longer, since you’ll be exposed to more UVA rays. UVA rays don’t burn, but penetrate deep into the skin. They are responsible for cell damage that contributes to ageing and skin cancer.