Selling apparel into California, beyond federal FTC labelling rules and CPSIA children's safety requirements, brings you face to face with the state law behind most warning-based claims: Proposition 65, formally the Safe Drinking Water and Toxic Enforcement Act of 1986. It does not ban products that contain listed chemicals; it requires a clear and reasonable warning before consumer exposure. For brands, importers and cross-border sellers the duty sits with whoever puts the product on the California market, and trims such as hang tags, care labels, poly bags and printing inks are exactly where the law most often bites.

1. The Logic: A Warning Duty, Not a Certificate

Proposition 65 is administered by California's Office of Environmental Health Hazard Assessment (OEHHA) and its list covers carcinogens and reproductive toxicants, with the official current list being what counts. There are two core rules: no knowing discharge of listed chemicals into drinking water, and a clear and reasonable warning before consumer exposure. A business only escapes the warning duty when exposure falls below the safe harbour levels, using the NSRL for carcinogens and the MADL for reproductive toxicants. Two practical points are widely misunderstood. There is no such thing as a Prop 65 certificate — a lab can give you test reports, but the compliance document is the warning itself. And needing a warning is not the same as selling an illegal product, while failing to warn can be the doorway to a claim.

2. The Risk Points Most Common in Apparel and Trims

Part or material Commonly listed chemicals How to reduce the risk
PVC poly bags and PVC labels Phthalate plasticisers such as DEHP and DBP Switch to PE, PP or CPE, or specify a non-phthalate plasticiser
Plating on buckles, rivets, eyelets and metal tag pins Lead, cadmium and hexavalent chromium compounds Use lead-free and cadmium-free stock, and trivalent chromium or chromium-free finishing
Printing inks and coatings on hang tags and bags Heavy-metal pigments such as lead and cadmium Move to water-based or soy inks and ask for a heavy-metal declaration
Chrome-tanned leather patches and reinforcements Hexavalent chromium compounds Choose vegetable or chromium-free tanning, or substitute PU or recycled materials
Plastic and silicone labels made with recycled stock Lead, bisphenol A and similar Specify grade and source, and require batch-level declarations and testing

3. How to Use the Warning: Wording, Placement, Online Pages

  • Standard warning: name at least one listed chemical and the type of harm (cancer, reproductive harm, or both) and give the official information website. The triangle exclamation symbol is part of the common format.
  • Short-form warning: for space-limited carriers such as hang tags and care labels, keeping only the core sentence and the website. California has amended the rules so short-form warnings must also name at least one chemical, with a transition period; the exact format and effective dates follow OEHHA's published rules.
  • Placement: the product itself, a hang tag or the packaging all work, as long as the consumer sees it before purchase; for apparel, the back of the hang tag or the poly bag is common.
  • Online sales need separate treatment: the most commonly missed point for cross-border sellers is that e-commerce requires the warning on the product page before purchase, for example in the description area; printing it only on the physical tag does not satisfy it.
💡 Sample English warning wording (format and terms follow OEHHA):
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Replace the named chemical with what was actually detected; when you cannot determine it, request part-level data from your supply chain instead of copying a template.

4. How to Reduce Risk at the Trim Level

  • Screen by material rather than by garment: within one garment, list metal, plastic, leather and printed parts as separate groups and judge each for warning or substitution.
  • Substitute materials first and warn second: PVC to PE, chrome tanning to chromium-free, heavy-metal pigments to water-based systems — this often solves the EU and US markets at once.
  • Testing approach: the law does not prescribe methods, so labs typically use the CPSIA-line CPSC methods — CPSC-CH-E1001 for total lead in metal, CPSC-CH-E1003 for paint and surface coatings, CPSC-CH-E1002 for non-metal — or ISO and EN methods for total lead, cadmium, phthalates and hexavalent chromium.
  • Documentation and change control: reports must map to material, supplier and batch; a supplier or formula change means reassessment, otherwise an old report is compliance on paper only.

5. A Buyer's Action Checklist

  1. Confirm whether any sales channel reaches California: Amazon, a direct-to-consumer site or physical retail all count, and one channel is enough.
  2. Ask trim suppliers for part-level test reports and material declarations stating method, date and batch.
  3. Write the banned list into the spec: no PVC or phthalate plasticisers, no lead or cadmium pigments, chromium-free tanning for leather.
  4. Reserve warning space on the hang tag or packaging: English wording, readable type size, positioned where the consumer sees it before buying.
  5. Publish the warning on your sales pages too, and keep a record of test data plus the warning decision so you can answer enquiries later.
💡 Tip: a warning is honest disclosure, not an admission that a product is unsafe; the reverse — a listed chemical detected with no warning at all — is the classic doorway to a claim in the US and can escalate through a sixty-day notice letter. The sound approach is material substitution first, warning labelling as the safety net, both lines in parallel. This article is practical guidance; the list, levels and formats follow OEHHA's official documents and your buyer's technical file.

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