The term “broad spectrum” refers to sunscreen that protects from both UVA and UVB rays. UVB rays are responsible for redness and sunburns, while UVA rays are the main culprit behind skin aging and can penetrate clouds, fog, and glass. (Think “B” for burns and “A” for aging.)
For more information visit our page on UVA + UVB rays and learn the difference.
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