A phrase with no definition behind it
Reef safe is one of the most confidently stated claims in the sun protection category and one of the least defined. There is no United Kingdom legal definition of the term, no test, no threshold, no certification scheme recognised in law and no list of ingredients whose absence entitles a product to use it.
That does not mean it is unregulated. It means it is regulated by general rules rather than by a specific one, and the general rules for environmental claims are more demanding than most people expect.
The Green Claims Code
The Competition and Markets Authority published the Green Claims Code to set out how existing consumer protection law applies to environmental claims. It is guidance rather than a new statute, and it explains obligations that already bind.
The Code sets out six principles. Claims must be truthful and accurate. They must be clear and unambiguous. They must not omit or hide important information. Comparisons must be fair and meaningful. Claims must consider the full life cycle of the product. And they must be substantiated.
Applied to a sun protection product, several of those principles bite hard.
Clear and unambiguous. Safe, for a reef, in what respect and at what concentration? A claim that cannot be pinned to a proposition cannot be assessed, and ambiguity is a failure in itself rather than a defence.
Not omitting important information. A claim resting on the absence of two particular substances, while the formulation contains others whose environmental effects are also discussed, omits information a consumer would consider relevant.
Full life cycle. An environmental claim about a product invites consideration of its packaging, manufacture and disposal, not only of what happens when it is worn into water.
Substantiated. Evidence has to support the claim actually made. Evidence about two ingredients supports a claim about two ingredients.
Why absolutes fail first
The word safe is the problem more than the word reef. An unqualified absolute asserts that no harm arises, which is a claim about an entire system and about every circumstance in which the product might be used.
Environmental claims of that character are the ones enforcement bodies look at first, and the reasoning is the same as for sunblock: an absolute leaves nothing to be evidenced against. The qualified version of the same claim is a different proposition. A statement that a formulation does not contain named substances is a factual statement about composition, and it is verifiable.
What a manufacturer cannot do is make the factual statement and let the absolute be inferred from it. The Green Claims Code addresses that directly under clarity and under omission, and consumer protection law addresses misleading omissions as well as misleading actions.
Where restrictions do exist, and where they do not
Some jurisdictions have restricted the sale of sun protection products containing particular ultraviolet filters, on environmental grounds. Those are local legal measures, and their existence does not create a definition of reef safe, nor does compliance with them entitle a product to a general environmental claim anywhere else.
This is a specific trap for United Kingdom copy. A formulation compliant with a restriction in one territory is a formulation compliant with that restriction. Translating that into an unqualified environmental claim on a British pack states something the compliance does not establish.
It is also worth noting that the science in this area is live and contested, and that a publication which does not publish figures it cannot source is not in a position to adjudicate it. What we can report is the legal position on the wording, which is where our competence sits.
| Principle | The question it asks of a reef safe claim |
|---|---|
| Truthful and accurate | Is the proposition true as stated |
| Clear and unambiguous | Safe in what respect, at what concentration, for what |
| No omission of important information | Does it rest on two ingredients while implying the whole formulation |
| Fair and meaningful comparisons | Compared with what, and is the comparison like for like |
| Full life cycle | Packaging, manufacture and disposal as well as use |
| Substantiated | Is the evidence held, and does it support the claim as made |
Principles as set out in the Competition and Markets Authority Green Claims Code.
Biodegradable, natural and the adjacent claims
Biodegradable. Meaningful only with a stated condition: what degrades, under what conditions, to what extent, in what period. An unqualified use falls foul of the clarity principle.
Ocean friendly, coral friendly, marine safe. Variants of the same construction with the same difficulties. Friendly is vaguer than safe, which makes it harder to assess rather than easier to defend.
Plastic free, plastic free formula. A composition claim that requires a definition of what is being excluded, and one where the definition is not settled.
Natural, clean, non toxic. A separate family with its own difficulties. Non toxic is an absolute about safety and is treated accordingly.
Who enforces this
Environmental claims sit with consumer protection enforcement rather than with cosmetics enforcement, although the two overlap. The Competition and Markets Authority has direct enforcement powers over consumer protection law under the Digital Markets, Competition and Consumers Act 2024, brought into force in stages. Local authority Trading Standards services enforce consumer protection law as well. And the Advertising Standards Authority applies the advertising codes, which contain their own environmental claims rules.
The practical position for a business is that an environmental claim on a sun protection product can be examined by more than one body, under rules that are more demanding than the cosmetics claim criteria, with substantiation expected to be held before the claim is made.
Third party marks and what they establish
Environmental claims are increasingly accompanied by a mark, a logo or a certification reference, which raises a question worth separating out: what does a third party mark establish that the claim itself does not?
It establishes that some scheme assessed something. What it does not establish is that the scheme is recognised in law, that its criteria are published, that its assessment is independent of the applicant, or that its criteria correspond to the claim being made on the front of the pack. The Green Claims Code addresses this in substance, because a mark that a consumer takes as official authority when it is a private scheme is itself capable of misleading.
The questions that separate a meaningful mark from a decorative one are the same in every category. Who runs the scheme, are its criteria published, is assessment carried out by somebody other than the applicant, and does the claim on the pack correspond to what the scheme actually assessed? A mark that fails those questions is a graphic device, and its presence next to a claim can strengthen the impression without strengthening the evidence.
If you are drafting it
State the composition fact, not the conclusion. Attach the condition. Do not let a narrow factual claim be presented in a way that implies a broad environmental one. Keep the substantiation for the claim as made, including any comparison. And check whether the artwork, the imagery and the product name are carrying an implication that the copy has carefully avoided.
What a reader can actually check
A consumer standing in a shop cannot verify an environmental claim. That is not a failure of attention, it is a structural feature: the claim concerns effects in a system that cannot be observed from a pack, and the substantiation sits in a file held by a business.
What can be checked from the pack is composition, because the ingredient list is printed and is standardised. A reader who wants to avoid a particular substance can do that. A reader who wants to know whether a product is good for the sea cannot, and no amount of front of pack wording changes that.
This is one of the clearer illustrations of the general point this publication makes. A label can carry verifiable facts and unverifiable conclusions in the same visual field, in the same typeface, with nothing to indicate which is which. The verifiable part is usually smaller, on the back, and written in a nomenclature most readers cannot parse.
What to take from this
Reef safe has no definition in United Kingdom law. It is governed by consumer protection law and the Green Claims Code, which demand clarity, completeness, life cycle consideration and substantiation. An unqualified absolute is the hardest version to support and the first one an enforcement body will look at.