Sun Protection For The Face - Do sunscreens really work?

Do sunscreens really work? The harmful rays of the sun, ultraviolet A (UVA) and ultraviolet B (UVB), injure the skin by damaging cells and degrading collagen. Over time, this causes cosmetically undesirable skin changes called photo-aging, which include brown spots, uneven skin tone, dryness, and reduced skin elasticity and thickness.

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