Harvard Health Letter

What to look for in sunscreen:

Changes to sunscreen labels include new terminology. No more calling a product “sunblock.” It’s just sunscreen. And no more claims that sunscreen is “sweat proof” or “waterproof.” A sunscreen can only be called “water resistant” for either 40 or 80 minutes, and only if it passes a government test. For a label to claim the sunscreen can prevent sunburn, the product must pass the sun protection factor (SPF) test. For a product to claim it can prevent skin cancer, it must pass the broad-spectrum test. Dermatologists recommend a broad-spectrum sunscreen with an SPF value of at least 30.
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