Pick up almost any multi-ingredient supplement and you'll find a line on the panel that reads something like Proprietary Blend — 750 mg, followed by a list of ingredients with no individual amounts beside them.
You've been given one number for eight ingredients. Here's why that matters more than it looks.
The rule that makes it work
Ingredients inside a blend must be listed in descending order by weight. That's the only information you get — and it's enough to see the problem.
Say a blend totals 750 mg across eight ingredients. If the first two are inexpensive bulk ingredients making up 700 mg between them, the remaining six split 50 mg. The ingredient you actually bought the product for — the one named in the advertising, the one with the research behind it — might be present at 5 mg against a studied dose of 300 mg.
Nothing on that label is false. The total is accurate. The order is accurate. You simply cannot tell whether the active ingredient is present in a meaningful amount, and that ambiguity is the product of a deliberate formatting choice.
Why it's called fairy dusting
The industry's own term for adding a trace of an expensive ingredient purely so it can appear on the label is fairy dusting. It works because buyers read ingredient lists rather than ingredient amounts — and a blend removes the amounts from view entirely.
The economics are straightforward. A clinically studied dose of a premium botanical might cost several dollars per bottle. A visible trace of it costs a few cents. Both let you put the ingredient name on the front of the bottle in the same size type.
The defence, and what's wrong with it
Manufacturers argue that blends protect a formula from being copied. It's not an unreasonable concern in the abstract.
But notice who the protection serves. A competitor with a budget can send your product to a lab and have the full composition back within a fortnight — reverse-engineering is not meaningfully prevented by a blend. The only party actually kept in the dark is the person buying the bottle.
What to do about it
- If a panel shows a blend total instead of individual amounts, you cannot verify the dose. Treat it as unknown rather than adequate.
- Check where your ingredient of interest sits in the descending-weight order. Last of eight is a signal.
- Compare against the amount used in published research. If you can't run that comparison, the label has done its job — for the seller.
- Ask whether the certificate of analysis reports each active separately. Many won't, which is the same problem one layer down.
There is nothing complicated about printing the amount of each ingredient on the label. It costs nothing and takes no extra space. When a company chooses not to, that choice is the information.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.