Which beauty and jewelry labels actually mean something
Some terms on a product page are legal definitions you can hold a brand to. Others are adjectives anyone may print. A reference list of which is which, and the question to ask when a label says nothing.
Writing the rest of this site turned up the same problem in category after category. A product page states something that sounds like a specification, the word does real persuasive work, and there is nothing behind it — no definition, no test, no body checking. Meanwhile the terms that are legally defined, and which you could actually hold a brand to, get mentioned less because they are duller.
So this is the reference we kept needing: which words are load-bearing and which are decoration. Everything below links to the piece where we worked it out.
Terms that are actually defined
These have a standard, a legal definition or a measurable meaning. If a brand states one and it is not true, that is a misrepresentation rather than a matter of opinion — which is exactly why they are worth asking for by name.
| Term | What it actually means | Where it matters |
|---|---|---|
| Gold-filled | US-regulated: the gold layer must be at least 1/20th of total weight, mechanically bonded | Everyday jewelry — roughly 100× the gold of plating |
| Vermeil | US FTC definition: sterling silver base, at least 2.5 microns of 10k or better | The tier above plating, below solid |
| Karat (10k–24k) | A defined proportion of gold in the alloy; 14k is 58.3%, 18k is 75% | Hardness and colour, not just value |
| UV400 | The lens blocks wavelengths up to 400nm — the whole UVA and UVB range | The one sunglasses spec that protects your eyes |
| ASTM F136 / F1295 | Named implant-grade titanium specifications. Nickel-free | Healing piercings, where nickel is the risk |
| Momme | A weight measure for silk. 19–25 is the durable band | Whether a silk pillowcase survives washing |
Ask for these by name. A seller who can state the standard is a different proposition from one who reaches for an adjective.
Terms with nothing behind them
None of these is illegal to print, and printing one is not evidence of bad faith — but none of them constrains the seller in any way, and several are used across products that behave completely differently.
| Term | Why it means nothing | Ask instead |
|---|---|---|
| “Waterproof” jewelry | No standard. Printed on thin plating and on solid gold alike | Solid, gold-filled, vermeil or plated — and what karat |
| “Surgical steel” | Not a regulated term. In its honest form it is 316L, which contains nickel | Is it ASTM F136 titanium, or 14k solid gold |
| “Hypoallergenic” | No agreed definition and no test behind it in cosmetics or jewelry | The full material or ingredient list |
| Absorbency ratings | Light / moderate / heavy are brand-invented and not comparable between brands | Treat the first cycle as the test; buy two before six |
| “PFAS-free” | An unregulated claim. Detecting PFAS needs laboratory testing | Can you send the third-party test report |
| “HD lace” | Describes thin lace. No standard, and thinner is also more fragile | Lace depth in inches, and the cap type |
| “Dermatologist tested” | Says a dermatologist was involved. Does not say what was found | Tested for what, on how many people, with what result |
| “Clean” / “natural” beauty | Neither has a legal definition in cosmetics | The specific ingredient you are trying to avoid |
The pattern is consistent: an official-sounding term is standing in for a number the seller would rather not give you.
The one question that works on all of them
Ask for the standard rather than the adjective, and treat the shape of the answer as the information. A brand that has paid for implant-grade titanium, cuticle-aligned hair, 22-momme silk or third-party PFAS testing will tell you immediately, because those cost money and they want credit for the spend. A brand that answers an adjective with another adjective has told you what you needed to know.
This is not cynicism about the whole market. Half the table above is terms that do mean something, and the brands using them correctly are being precise on purpose. The point is only that precision and vagueness look similar on a product page, and the difference is worth thirty seconds.
Where each of these came from
Each row above was worked out in its own piece, and the reasoning is there rather than here: what “waterproof” hides on jewelry, why “surgical steel” is not a specification, absorbency ratings and the PFAS question, what wig listings do and do not disclose, momme and what silk weight buys, UV400 and why a dark lens without it is worse, and what karat actually changes.
If you spot a term we have got wrong, or one that belongs here, the contact page reaches us and corrections get published with the date on them.
Questions people ask about this
Is “hypoallergenic” a regulated term?
No. There is no agreed definition and no test behind it in cosmetics or jewelry, so a brand may print it regardless of what the product contains. Ask for the full material or ingredient list instead — that is the thing a brand can be held to.
What is the difference between gold-filled and gold-plated?
Gold-filled is a US-regulated term: the gold layer must be at least 1/20th of the item's total weight and mechanically bonded, which is roughly a hundred times the gold in plating. "Plated" has no minimum thickness and can be under a micron. One is a specification, the other is a description.
Does “dermatologist tested” mean a product is safe?
It means a dermatologist was involved at some point. It does not state what was tested, on how many people, or what the result was — a product can be dermatologist tested and have performed badly. The useful question is what was tested and what was found.
Is “surgical steel” a real standard?
No. In its honest form it means 316L or 316LVM stainless, an alloy containing nickel, but nothing requires a seller to mean that. Implant-grade titanium has real designations — ASTM F136 and F1295 — that you can ask for by name.
How do I tell a real specification from marketing language?
Ask for the standard rather than the adjective. Terms with substance behind them — karat, momme, UV400, ASTM F136, gold-filled — are specific, measurable and cost the seller money, so brands meeting them say so immediately. A vague answer to a specific question is itself the answer.
