How to read a sunscreen's Drug Facts label
A label-literacy guide to the Drug Facts panel on US sunscreens — active ingredients, SPF, broad spectrum, water resistance, and where each term is defined.
Educational information only — not a skin assessment, treatment, diagnosis, product recommendation, or product service. Follow the directions on the product's own label.
In the United States, sunscreen isn't a cosmetic — it's an over-the-counter (OTC) drug. That's why a sunscreen carries a standardized Drug Facts panel rather than only a cosmetic ingredient list. This article is general label-literacy information about how that panel is laid out and what its standardized terms mean. It doesn't evaluate products, doesn't say what anyone should use or how much, and isn't medical advice — the product's own directions and a licensed professional are the references to follow.
Key points
- US sunscreen is regulated as an OTC drug, so it carries a fixed-format Drug Facts panel.
- The panel always uses the same sections in the same order: Active ingredients, Uses, Warnings, Directions, Other information, Inactive ingredients.
- SPF, Broad Spectrum, and Water Resistant (40 / 80 minutes) are standardized label designations defined by FDA's sunscreen rules.
- Terms like waterproof, sweatproof, and sunblock are not permitted on US sunscreen labels.
Why a sunscreen has a Drug Facts panel
A product regulated as an OTC drug must carry a Drug Facts panel in a fixed federal format. Because sunscreens are OTC drugs in the US, every compliant sunscreen — whether a lotion, stick, or spray, and whether or not it's also marketed as a moisturizer or makeup — shows this panel. A cosmetic-only product, by contrast, shows an ingredient list but no Drug Facts panel.
The sections of the panel
The Drug Facts panel uses the same headings, in the same order, on every product:
| Section | What it lists |
|---|---|
| Active ingredient(s) | The UV filters and the amount of each. This is the "drug" part of the product. |
| Uses | Standardized wording, set by FDA's rules, describing what the product is for. |
| Warnings | Standard cautions — for example "For external use only," when to stop use, and when to ask a doctor. |
| Directions | How and when the label says to apply and reapply. This is the instruction to follow for that specific product. |
| Other information | Storage and similar notes. |
| Inactive ingredients | Everything else in the formula, listed by name. |
Three terms the label defines
A few words on a sunscreen label aren't marketing language — they're designations with specific meanings under FDA's sunscreen rules:
| Term | What it denotes on the label |
|---|---|
| SPF | A value determined by a standardized test described in FDA's sunscreen rules and printed on the label as a number. It is a measured label value, not a marketing adjective. |
| Broad Spectrum | A designation a product may show only after passing a specific test of its protection across the UVA range. Without passing that test, the term isn't allowed. |
| Water Resistant (40 / 80 minutes) | The only water-related claim permitted, and it must state the time — 40 or 80 minutes — shown by a standardized test. |
By the same rules, "waterproof," "sweatproof," and "sunblock" are not allowed on US sunscreen labels, because they can overstate what a product does. If you see them, the label isn't following the current US standard.
What the label can — and can't — tell you
A sunscreen's label can tell you its active ingredients and amounts, its SPF value, whether it qualifies as broad spectrum, whether (and for how long) it's water resistant, and the product's own directions for use. It can't decide what's right for your skin, your situation, or a child's. For how to use a specific product, follow that product's Directions; for personal questions — including sun sensitivity, medications, or skin conditions — a dermatologist, pharmacist, or other licensed professional is the right reference.
References (3)
- Q&A: New Requirements for OTC Sunscreen Products Marketed in the U.S. — U.S. Food & Drug Administration
- 21 CFR §201.327 — OTC sunscreen drug products; required labeling — U.S. eCFR (National Archives)
- 21 CFR §201.66 — Drug Facts format and content — U.S. eCFR (National Archives)
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