No regulator in the US, UK or EU defines, confers or enforces "medical-grade" for cosmetics. There are cosmetics and there are drugs.
Medical-grade formulations, available only through licensed professionals — pharmaceutical-strength actives that over-the-counter products are not permitted to contain.
The market's own words. No brand is named, because the claim is the thing under examination and it belongs to dozens of them.
Does any cosmetics regulator in the United States, the United Kingdom or the European Union define "medical-grade", set a standard for it, confer it on a product, or attach any consequence to using it?
The same claim written as a proposition somebody could go and check: who, compared with what, measured how, over how long.
What kind of missing this is
Nobody has run the study. Not a small study, not a weak study, not a study with the wrong endpoint. None.
There is no study here, and that is the finding. This is a question about law, so the strongest available source is the law itself, and the law is unusually blunt about it.
In the United States, the FDA recognises cosmetics and drugs. Which one a product is depends on its intended use, not on its price or its retailer. On the adjacent industry coinage the agency is flat: the term "cosmeceutical" has no meaning under the law. No lesser statement exists for "medical-grade", because the FDA has never had to make one — there is nothing there to comment on.
In the UK and EU, Regulation 1223/2009 defines what a cosmetic product is and admits no intermediate category. What may be said about one is governed by the six common criteria in the Annex to Regulation 655/2013: legal compliance, truthfulness, evidential support, honesty, fairness, informed decision-making. The honesty criterion is the one that bites here. It states that presentations of a product's performance shall not go beyond the available supporting evidence, and that claims shall not attribute to a product specific — meaning unique — characteristics if similar products possess the same characteristics.
Which is close to a description of the phrase itself. It asserts a uniqueness that the regulatory framework does not recognise, in a system that already forbids exactly that move.
A regulator publishing a definition. That is the whole of it, and it is worth being concrete about what would count: an FDA guidance document, an amendment to Regulation 1223/2009, a UK statutory instrument, or an ISO standard adopted into any of them, that says what "medical-grade" means, who may apply it, and what happens to a company that applies it wrongly.
Short of that, a voluntary industry standard with published criteria and an independent certifying body would move this entry to Partially established — the term would then mean something, even if the something were self-awarded, and a reader could go and read the criteria.
Neither exists as of today. If one appears, this entry gets rewritten rather than amended, because the finding would have changed in kind.
It does not mean products described this way are ineffective. Plenty of them are excellent, and a few contain actives at concentrations that genuinely are not sold in supermarkets.
It does not mean clinic distribution is worthless. Buying a retinoid from somebody who asks what else you are using, and who you can telephone in week three when your face is peeling, is a real service and worth paying for. It is just a service, not a grade.
It does not mean the companies using the phrase are lying. There is no rule against it, no definition to violate, and no regulator to violate it in front of. That is precisely the problem.
And it does not mean the opposite claim is true either. "Drugstore skincare is exactly as good" is the same kind of category statement with the same lack of anything behind it.
You are paying for a formula and, quite often, for the person handing it to you. Both can be worth the money. Neither is what the phrase on the box is describing.
What you are not paying for is a verified tier, because there isn't one. If a product is better than the cheaper thing, it is better for a reason that can be named — a higher concentration of a specific active, a delivery system with data behind it, a stabilised formulation, an ingredient that is genuinely prescription-only. Every one of those is a fact you can ask for and check.
So ask. "What is in this that isn't in the twenty-pound one, and at what percentage?" is a question with an answer. "Medical-grade" is not an answer to it, and a counter that cannot get past the phrase has told you something useful anyway.
Type and funding are stated because they change what a study is allowed to prove, and because a trial paid for by the company selling the thing is not disqualified — it is just not the same evidence as one that was not.