Short answer: of the eight claims on this page, only two are checked by anyone before the product is sold. “Clinically proven,” “doctor recommended,” “all natural,” “pharmaceutical grade,” “dermatologist tested” and “FDA-registered facility” are marketing language with no defined standard. “Supports immune health” is legal but unreviewed. “Non-GMO” is verified but says nothing about whether the product works.
Americans spend about $60 billion a year on dietary supplements and considerably more on skincare, and most of that money is moved by a handful of phrases on the front of the box. This guide goes through the eight most common ones, explains what the FDA and the Federal Trade Commission actually require behind each, and ends with a two-minute method for checking the study a brand says it has. The Claim Decoder below puts all eight on flip cards.
⚖️ The rule that explains everything else
- Drugs (anything that claims to treat, cure or prevent a disease, or to change the structure or function of the body) need FDA approval before sale. Sunscreen, acne treatments and antiperspirants are legally drugs; that is why they have a “Drug Facts” panel.
- Dietary supplements do not need approval. Under the 1994 DSHEA law a manufacturer may make “structure/function” claims (“supports joint health”) without review, as long as the FDA disclaimer appears and the product does not claim to treat a disease.
- Cosmetics do not need approval either. A moisturizer may claim to “reduce the appearance of wrinkles”; the moment it claims to “rebuild collagen” it has made a drug claim, which is illegal without approval.
- Advertising claims of every kind fall under the FTC, which requires evidence but does not check it in advance.
What does “clinically proven” actually mean on a label?
Legally, nothing specific. There is no federal definition, no minimum number of participants, and no requirement that the study be published or that anyone outside the company has seen it. What exists is the FTC’s general rule that health claims must be backed by “competent and reliable scientific evidence,” which the agency has interpreted in enforcement cases as at least one well-designed human trial. The catch is the word enforcement: the FTC acts after a complaint, on a fraction of products, and the fines land years after the box was sold.
In practice “clinically proven” covers everything from a 400-person randomized, placebo-controlled trial published in a peer-reviewed journal to twelve employees who filled out a questionnaire after four weeks. The phrase itself cannot tell you which one you are holding. The three questions that can: proven to do what (“improve hydration” and “reduce wrinkles” are different claims), in how many people, and where the study can be read. A brand that has the strong version of the evidence usually says so on the box, with the number: “in a 12-week clinical study of 112 women.” Vagueness is itself information.
Which label claims does the FDA regulate, and which does it ignore?
It helps to sort the eight claims by who, if anyone, stands behind them. Two are genuinely verified: the Non-GMO Project butterfly, a third-party certification with published standards, and the mandatory USDA bioengineered-food disclosure on packaged food. Two are legal categories with rules but no review: structure/function claims such as “supports immune health,” which must carry the asterisked FDA disclaimer, and “FDA-registered facility,” which is a true statement about a form the company filed, not about the product. Registration is required of every food and supplement facility, involves no inspection at the time of filing, and the FDA has repeatedly warned companies against using it as an endorsement.
The remaining four have no owner. “Doctor recommended” and “dermatologist tested” usually rest on a survey or an in-house patch test that the brand designed, paid for and interpreted. “All natural” has no FDA definition for supplements or cosmetics and only informal guidance for food; the agency has been asked to define it since 2014 and has not. “Pharmaceutical grade” is a real standard for raw ingredients, tested against a USP monograph, but no one verifies that phrase on a finished supplement, and the products that actually meet the standard carry the USP Verified mark instead of the words.
The marks worth looking for are the boring ones: USP Verified, NSF Certified for Sport or NSF Contents Tested, the National Eczema Association Seal of Acceptance on skincare, and, for sunscreen, the Drug Facts panel itself. Each has published criteria, a testing program and a way to lose the mark. None of them say the product works; they say it contains what it claims at the dose it claims, which is more than most labels can prove.
How do you check the study behind a claim in two minutes?
Two minutes is realistic once you have done it twice. The most common outcome is not finding a bad study; it is finding no study at all, and a brand that cannot produce one has told you what the phrase on the box was worth.
Claim Decoder: eight phrases, flipped
Each card shows the claim as it appears on the shelf. Flip it for the verdict and the rule behind it.
🔍 Claim Decoder
Tap a card to flip it. Green: a real, checkable claim. Yellow: true but weak. Red: marketing.
Clinically provenTap to decode
Not a regulated term. The FTC expects “competent and reliable scientific evidence” behind it, but nobody checks before the product ships. Ask: proven to do what, in how many people, and where is the study?
Doctor recommendedTap to decode
Usually a paid survey of a few hundred physicians asked which brand they “would recommend” from a short list. No standard, no minimum, no FDA involvement. Rule: ignore unless the survey is published.
All naturalTap to decode
The FDA has never defined “natural” for cosmetics or supplements and only loosely for food. Arsenic and poison ivy are natural. Rule: read the ingredient list instead; the word tells you nothing about safety or strength.
Pharmaceutical gradeTap to decode
A real term for raw materials tested to USP monograph standards, but no agency verifies it on a finished supplement. Rule: look for the actual USP Verified or NSF mark, not the phrase.
Non-GMOTap to decode
Third-party verified when it carries the Non-GMO Project butterfly, and the USDA bioengineered-food disclosure is mandatory. Rule: a real claim, but it says nothing about effectiveness or safety.
Dermatologist testedTap to decode
No standard defines the test, the number of subjects, or the result. A product that caused a rash in the test can still say “tested.” Rule: “tested” is not “recommended” and neither is regulated.
Supports immune healthTap to decode
Legal for supplements under DSHEA without FDA review, as long as the asterisked disclaimer appears: “not evaluated by the FDA … not intended to diagnose, treat, cure or prevent any disease.” Rule: the disclaimer tells you the claim was never checked.
Made in an FDA-registered facilityTap to decode
Food and supplement facilities must register with the FDA; registration involves no inspection, no approval and no quality review. Rule: it is a legal minimum dressed up as a credential. The FDA does not “approve” supplements or cosmetics at all.
What do the good labels look like in practice?
Four products that show the difference between a checkable mark and a phrase, chosen because they are on most drugstore shelves. Prices are approximate as of September 2026.
Notice what these have in common: the trustworthy part of each label is a third-party mark with public criteria, not an adjective. The house brand with a USP mark is a safer buy than a premium brand describing itself as pharmaceutical grade.
⚠️ Five phrases that should make you slow down
- “Clinically proven” with no number. A brand with a real trial gives the participant count.
- “Doctors recommend” without naming the survey. Paid panels of a few hundred physicians are the norm.
- “FDA approved” on a supplement or cosmetic. Not possible. The FDA does not approve these products; the claim is either a mistake or a lie.
- “Pharmaceutical grade,” “medical grade,” “professional strength.” No agency checks any of them on finished products.
- Disease words on a supplement. “Treats,” “cures,” “prevents,” “reverses.” Legal only for approved drugs; on a supplement they are the surest sign the company is not being watched.
Frequently asked questions
Does the FDA approve supplements or skincare before they are sold?
Is “clinically proven” a regulated term?
What do the USP Verified and NSF marks mean?
How do I find the study behind a claim?
Sources
📚 Sources
- FDA, Dietary Supplement Labeling Guide: Chapter VI, Claims: https://www.fda.gov/food/dietary-supplements-guidance-documents-regulatory-information/dietary-supplement-labeling-guide-chapter-vi-claims
- FDA, Is It a Cosmetic, a Drug, or Both?: https://www.fda.gov/cosmetics/cosmetics-laws-regulations/it-cosmetic-drug-or-both-or-it-soap
- FDA, Use of the Term Natural on Food Labeling: https://www.fda.gov/food/food-labeling-nutrition/use-term-natural-food-labeling
- FDA, Registration of Food Facilities: https://www.fda.gov/food/online-registration-food-facilities
- FTC, Health Products Compliance Guidance (2022): https://www.ftc.gov/business-guidance/resources/health-products-compliance-guidance
- USP, Dietary Supplement Verification Program: https://www.usp.org/verification-services/dietary-supplements-verification-program
- NIH Office of Dietary Supplements, Dietary Supplements: What You Need to Know: https://ods.od.nih.gov/factsheets/WYNTK-Consumer/
- National Eczema Association, Seal of Acceptance: https://nationaleczema.org/eczema-products/