What is SPF in Sunblock and Its Significance for Skin Care

SPF stands for Sun Protection Factor. It is a numerical rating system used to measure the level of protection a sunblock provides against ultraviolet B (UVB) rays, which are the main cause of sunburn.

Key SPF Facts:

Higher SPF means more protection: SPF 15 blocks 93% of UVB rays, SPF 30 blocks 97%, and SPF 50 blocks 98%. SPF 30 is the minimum recommended for daily use. Look for broad-spectrum sunscreens that protect against both UVB and UVA rays.

Significance of SPF for Skin Care:

SPF prevents sunburn, prevents premature aging by protecting collagen and elastin, and reduces the risk of skin cancer — the most common cancer, with sun exposure as a major risk factor.

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Related Collections: Sunscreen, SPF 50 Sunscreens.