“May Contain Traces”: What Allergen Warnings on Singapore Snack Packets Actually Mean

You turn the packet over, scan past the calories, and there it is in small grey type: “May contain traces of peanuts.” Does that mean there are peanuts in it or not? And if the manufacturer isn't sure, why is it your problem to decide?

It's one of the most confusing lines on any Singapore snack packet — and unlike most of the label, it isn't something the law forces a company to print. Here's what allergen warnings on packaged food in Singapore actually guarantee, what they don't, and how to read them without either panicking or ignoring them.

First, the part that is mandatory

Under the Singapore Food Regulations administered by the Singapore Food Agency (SFA), prepacked food sold here must declare ingredients known to cause hypersensitivity. According to SFA's guidance on reading food and nutrition labels, the statement of ingredients must clearly indicate eight groups:

  • Cereals containing gluten
  • Crustaceans and crustacean products
  • Eggs and egg products
  • Fish and fish products
  • Peanuts, soybeans and their products
  • Milk and milk products (including lactose)
  • Tree nuts and nut products
  • Sulphites at a total concentration of 10 mg/kg or more

The key word is ingredient. If a company deliberately puts one of these into the recipe, it has to say so. That part is enforceable, and it's why the ingredients list — not the front of the pack — is the only place worth looking first.

“May contain” is a completely different animal

Precautionary statements — “may contain peanuts”, “made in a facility that processes milk”, “produced on shared equipment” — are about cross-contact, not recipe. SFA acknowledges these phrases exist and notes that they are used “to caution the possibility that the food product may contain allergenic ingredients”, adding that consumers can approach the food business named on the label if they need more information.

That last line matters more than it looks. It's an admission that the packet alone may not tell you enough.

The Food and Agriculture Organization of the United Nations (FAO) explains the mechanism plainly: a chocolate bar with no nuts in the recipe may be made on the same line as products that do, leaving traces behind despite cleaning. Flour, milk powder or sesame can also transfer through shared storage, transport or handling.

Why the wording is all over the place

Because, in much of the world, nobody standardises it. FAO notes that the use of “may contain” labels varies widely across products and countries and remains unregulated in many places, leaving consumers with inconsistent information that makes the real level of risk hard to judge.

The consequences cut both ways. Some people needlessly avoid foods that are perfectly safe for them — shrinking an already limited diet. Others see the warning slapped on so many packets that they stop believing it and eat the product anyway. Neither response is the label doing its job.

What changed in July 2026

There is movement. On 7 July 2026, at its 49th session in Geneva, the Codex Alimentarius Commission — the FAO/WHO standards body — adopted new international guidelines on precautionary allergen labelling as an annex to the General Standard for the Labelling of Pre-packaged Foods.

The principle is straightforward: a “may contain” statement should not be a legal shrug. Under the new guidance, it should be used only after a business has put proper allergen management measures in place and a scientific risk assessment shows a residual risk genuinely remains. The recommendations draw on seven joint FAO/WHO expert consultations.

The honest caveat: Codex texts are voluntary. They are internationally recognised benchmarks that inform national law rather than law themselves. So don't expect Singapore packets to change overnight — but the direction of travel is towards fewer, more meaningful warnings.

Why this is becoming a bigger deal in Singapore

FAO estimates food allergies affect around 4.3 per cent of the global population. Locally, the picture appears to be shifting. In a June 2025 announcement of the Singapore Food Allergy Story, a four-year joint study led by NUH and NUS Medicine with KKH, NUP and SSHSPH, both NUH and KKH reported a steady rise in paediatric food allergy cases, with the number of oral food challenge sessions in children rising 60 per cent between 2022 and 2024.

The common triggers named: eggs, milk and peanuts in younger children, and shellfish in adolescents and young adults. That tracks with SFA's observation that seafood allergy is one of the most common food allergies among adults and children in Asia, given how much seafood features in our diets.

How to read a snack packet in the aisle

  1. Read the ingredients list first, every time. Reformulations happen quietly. The pack you bought last month may not match this one.
  2. Treat “contains” and “may contain” as different categories. The first is a fact about the recipe. The second is a flag about the factory.
  3. Don't rank the warnings by wording. “May contain traces” is not reliably safer than “made in a facility that processes” — there's no standard scale behind the phrasing.
  4. If it matters clinically, ask. SFA's own advice is to contact the food business named on the label. A brand that can't answer questions about its allergen controls is telling you something.
  5. Get a diagnosis rather than self-diagnosing. Avoidance based on a guess carries a real nutritional cost, especially for children.

Where we stand

HexaCrunch makes baked brown-rice crackers, and we'd rather you read our packet properly than trust our marketing. Our crackers are made with cricket protein — crickets are related to crustaceans, so if you have a shellfish or crustacean allergy, our snacks are not for you, and we'd rather say that plainly than bury it. If that's not you and you want to see what a genuinely different crunch tastes like, the Try-All 3-Pack is the easiest place to start.

This article is general information, not medical advice. If you suspect a food allergy, speak to a doctor.

Sources

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