In June 2025, the Australian consumer group CHOICE sent 20 sunscreens — mostly labeled SPF 50 or 50+ — to an accredited lab and had them tested against the actual standard their labels claim to meet. Sixteen of the 20 failed. One, Ultra Violette’s Lean Screen SPF 50+, tested at SPF 4. That’s not a rounding error; it’s a sunscreen that, if the test is right, offered roughly a twelfth of its advertised protection.
The story is real, and it should change how you shop. But the honest version of it is more useful — and more interesting — than “sunscreen brands are lying to you.” Here’s what CHOICE actually found, why SPF testing is genuinely hard to pin down even without any dishonesty, and a buying framework that doesn’t depend on trusting the number on the front of the bottle.
What CHOICE actually tested, and what it found
CHOICE’s lab used the Australian/New Zealand Sunscreen Standard (AS/NZS 2604:2021), which points to the same international test methods — ISO 24444 for SPF, ISO 24443 for UVA — used across most of the world, including in the U.S. FDA’s own framework. The test itself is a human panel: a small group (CHOICE used 10 adult volunteers) has bare skin exposed to UV light to find the dose that just causes redness, then the same test is repeated with sunscreen applied at a standardized rate. The ratio between the two doses is the SPF.
Only four of the 20 products matched or beat their claim: Cancer Council Kids Sunscreen SPF 50+ (tested at 52), La Roche-Posay Anthelios Wet Skin 50+ (72), Mecca Cosmetica To Save Body SPF 50+ (51), and Neutrogena Ultra Sheer Body Lotion SPF 50 (56). The rest ranged from the low 20s up to the mid-40s — still real protection, just not what the label promised. Lean Screen was the outlier: SPF 4. CHOICE was surprised enough by that result that it delayed publication, sourced a different batch, and sent it to a second, independent lab in Germany. That retest came back at SPF 5 — close enough to the first result to stand behind it.
Ultra Violette initially disputed the finding, suggesting a sample mix-up and arguing that its Lean Screen formula’s zinc oxide concentration (22.75%) made an SPF of 4 “scientifically impossible.” But on August 22, 2025, after its own internal investigation, the company withdrew Lean Screen (and a companion product, Velvet Screen) from sale entirely and offered refunds. What it disclosed in that process is the most useful data point in this whole story: across eight of Ultra Violette’s own tests, the same product returned SPF results of 4, 10, 21, 26, 33, 60, 61, and 64 — an eightfold spread on what should have been the same formulation. That’s not one bad lab catching one bad brand. That’s a company’s own repeated testing landing all over the map.
This wasn’t a one-country blip, either. In its own September 2025 test round, the UK consumer group Which? failed two products on similar grounds — Ultrasun Family SPF30 lotion missed the minimum required UVA level, and Morrisons’ SPF30 sun lotion didn’t meet its claimed SPF — and explicitly flagged the Australian Lean Screen recall as the same pattern playing out elsewhere.
Why SPF numbers move around — and where fraud actually enters
It’s tempting to read “16 of 20 failed” as “16 companies lied.” The Ultra Violette data argues against that as the whole story. ISO 24444-style testing relies on human skin, a subjective redness endpoint, exact and consistent product application (a notoriously fussy step — too thin or uneven an application tanks the result), and UV lamps that need careful calibration. Different labs, different volunteer panels, and even different runs at the same lab can land on meaningfully different numbers for an identical product. Some of the manufacturers CHOICE contacted pushed back with their own test certificates, from other accredited labs, showing their product passing under the same standard. Both results can be true at once — that’s the uncomfortable part.
None of that excuses a brand shipping SPF 4 under an SPF 50+ label and standing behind it until a second lab confirms the problem. And it doesn’t mean every SPF claim on a shelf is trustworthy. It means the honest framing is: SPF testing has real, structural variance, on top of whatever mislabeling is happening — and a regulator that doesn’t audit which lab tested a product, or how, has no way to catch either one.
The regulatory response
Australia’s Therapeutic Goods Administration (TGA), which regulates sunscreen as a therapeutic good, opened an eight-week public consultation in early 2026 — “Seeking improvements to the regulation of sunscreens in Australia,” with submissions closing May 23, 2026 — directly in response to the CHOICE findings. The headline proposals: require that SPF testing be done by an accredited, GMP-licensed laboratory (the TGA currently doesn’t track or vet which lab a manufacturer uses), and allow — or require — newer lab-bench (in vitro) test methods as an alternative to the human-panel approach, specifically to cut down on the kind of inter-lab variance the CHOICE and Ultra Violette data showed. More than 20 products were pulled from Australian shelves in the aftermath.
In the U.S., the FDA regulates sunscreen as an over-the-counter drug, and its authority here is narrower and slower-moving than a lab-accreditation fix: the agency doesn’t independently retest finished products for SPF accuracy at scale. What it does regulate directly is which active ingredients are allowed at all, under a “Generally Recognized As Safe and Effective” (GRASE) framework. As of the FDA’s most recent proposed order, only zinc oxide and titanium dioxide carry a full GRASE proposal — the two mineral filters. Two older ingredients, PABA and trolamine salicylate, are proposed not GRASE on safety grounds and are essentially gone from the U.S. market. A middle group of 12 filters still in wide use — including oxybenzone, avobenzone, octocrylene, octinoxate, octisalate, and homosalate — are labeled “not GRASE” not because they’ve been shown unsafe, but because the FDA says it still needs more safety data from manufacturers before it will finalize a determination. They remain legal to sell in the meantime. The one clear step forward: in June 2026, the FDA finalized bemotrizinol as GRASE for ages 6 months and up — the first new sunscreen active ingredient added to the U.S. market in roughly two decades, after 25+ years of use in Europe and Asia.
A buying framework that doesn’t depend on the SPF number being exact
Given all that, chasing the highest SPF on the shelf is close to pointless — the jump from SPF 30 to SPF 50 filters out roughly 97% vs. 98% of UVB rays, a difference that’s easily erased by using too little product or skipping a reapplication, and one that a mislabeled bottle can erase entirely. A more resilient approach:
- Buy “broad spectrum.” This is an FDA-defined term that means the product is tested against both UVA and UVB, not just the UVB rays that SPF alone measures. UVA is the ray most associated with skin aging and contributes to skin cancer risk; a high SPF number says nothing about UVA protection on its own.
- Use enough of it, and reapply. The American Academy of Dermatology puts the effective adult dose at about one ounce — a full shot glass — for exposed skin, plus at least a teaspoon for the face, reapplied every two hours and immediately after swimming or sweating. Consumers routinely apply 20–50% of that amount, which does more to undercut real-world protection than a few points of lab-measured SPF variance ever could.
- Check the water-resistance rating, and respect its clock. “Water resistant” and “very water resistant” are FDA-tested, time-bound claims — 40 and 80 minutes respectively — not a permanent property. Reapply on that schedule if you’re swimming or sweating, not just every two hours.
- Mineral filters (zinc oxide, titanium dioxide) currently sit on the cleanest regulatory ground in the U.S. — the only two actives with a full GRASE proposal. That’s a reason to consider them if you want the least regulatory ambiguity, not proof that chemical filters are unsafe; the FDA’s “not GRASE” label for filters like avobenzone or octocrylene reflects a data gap, not a finding against them.
- The best sunscreen is the one you’ll actually reapply. Texture, scent, and how a product wears under makeup or during exercise are not vanity concerns here — the AAD’s own data shows most sunburns trace back to under-application or skipped reapplication, not to an underperforming formula. A merely-good sunscreen used correctly beats a theoretically-perfect one left in a bag.
A recalls-awareness note
Sunscreen mislabeling isn’t the only reason products get pulled. In 2021, the independent lab Valisure petitioned the FDA after finding detectable benzene — a known carcinogen with no legitimate place in sunscreen — in 27% of the nearly 300 sunscreen batches it tested, which led to voluntary recalls from several major brands. Because sunscreen is regulated in the U.S. as an over-the-counter drug, not a general consumer product, recalls run through the FDA’s own recall system — fda.gov/safety/recalls-market-withdrawals-safety-alerts — rather than the Consumer Product Safety Commission, which doesn’t have jurisdiction here. The FDA’s recall page lets you search by product or company and offers free email alerts filtered by category; it’s the right place to check before restocking a sunscreen you already own, particularly one bought internationally or from a smaller brand.