Broad spectrum, SPF, water resistance: a quick label-reading guide

A sunscreen label answers several different questions. Broad spectrum means the product protects against UVA and UVB radiation. SPF describes protection against sunburn, which is primarily associated with UVB. A product with SPF alone does not answer the same question as a broad-spectrum label.

The AAD recommends choosing a sunscreen that is broad spectrum, SPF 30 or higher, and water resistant. SPF is not a timer: the FDA cautions that it does not mean you can multiply your usual time to burn by the number on the bottle. Actual exposure depends on UV intensity, location, time, and how much sunscreen is applied.

Water resistance is also limited. The FDA requires a water-resistant sunscreen to state whether it maintains protection for 40 or 80 minutes while swimming or sweating. That is not waterproof or all-day protection. Reapply according to the label, including after the stated swimming or sweating period and after towel drying.

Check the Drug Facts panel and directions for the specific product. Shade, clothing, hats, and sunglasses remain useful parts of a sun-protection routine.

AREV Daily UV Fluid is in development. Final formula and SPF will be announced after finished-product testing. This article is general sunscreen education, not a claim about our product.

Sources

AAD: How to decode a sunscreen label — https://www.aad.org/public/everyday-care/sun-protection/shade-clothing-sunscreen/understand-sunscreen-labels

AAD: Choosing the right sunscreen — https://www.aad.org/public/everyday-care/sun-protection/shade-clothing-sunscreen/choosing-right-sunscreen

FDA: Sunscreen guidance — https://www.fda.gov/drugs/understanding-over-counter-medicines/sunscreen-how-help-protect-your-skin-sun

FDA: Sunscreen labeling and effectiveness testing guide — https://www.fda.gov/regulatory-information/search-fda-guidance-documents/labeling-and-effectiveness-testing-sunscreen-drug-products-over-counter-human-use-small-entity