Macao’s Chief Executive’s Order No. 109/2025 prohibits the import, export, and transshipment of 14 mercury-added products from 1 January 2026. Skin-lightening soaps and creams are on the list.
The formulation angle is old news — mercury has been out of mainstream cosmetic chemistry for years, and the European Union and United States both restricted it long ago. What makes this order worth reading is the transshipment clause, because that is the part that reaches companies with no intention of selling anything in Macao.
Transshipment is the clause that travels
Import and export prohibitions bind the parties on either end of a shipment. A transshipment prohibition binds the goods themselves while they pass through. Cargo that merely changes vessel or sits briefly in a bonded facility is caught by it.
For anyone routing product through the Pearl River Delta, that is a logistics question rather than a formulation one. A consignment travelling from a manufacturing site to a third market can be stopped in transit under this order even though neither the shipper nor the buyer is based in Macao. Freight forwarders will adjust routing; brands that have not asked their forwarder about it will find out through a delay.
The order follows the Minamata Convention on Mercury, which put mercury-added cosmetics on an international phase-out track and gave signatories a common list to legislate against. That shared origin is why the exemptions look familiar across jurisdictions: limited use in eye cosmetics where no safe and effective alternative exists, plus research applications.
Why skin-lightening remains the pressure point
Mercury compounds inhibit melanin production, which is precisely why they persisted in lightening products long after they disappeared from the rest of the category. Mercury is a neurotoxin with documented effects on the nervous system, kidneys, and immune system, and exposure risk is highest for children and during pregnancy. The environmental case runs alongside it, since mercury from rinse-off products enters wastewater and accumulates.
The exposure that actually catches legitimate brands is contamination rather than intent. Nobody formulating for an export market is adding mercury deliberately. The risk sits in raw materials sourced through long, thinly documented supply chains, and in third-party fillers whose equipment history is unknown.
That is a testing and qualification problem. Heavy metal screening on incoming raw materials, certificates of analysis that name the testing method rather than just stating a pass, and periodic finished-product verification are the controls that matter here. They are unglamorous and they are what a retail buyer will ask to see when a regional ban makes the news.
Regional rules also diverge in ways that punish a single global specification. India’s ingredient standards, the Indonesian ingredient framework, and Macao’s new order all address overlapping territory with different lists and different effective dates. A brand shipping across Asia needs a market-by-market ingredient check rather than one master formula assumed to clear everywhere — the same lesson that recent ingredient regulation updates and national standards such as IS 4707 have already forced on the category.
What replaces it, and what that costs
The alternatives are established: niacinamide, arbutin, and vitamin C derivatives all address uneven tone through different mechanisms, and all of them come with formulation trade-offs a brand should understand before it commits to a claim.
Niacinamide is the most forgiving — stable across a reasonable pH range and comfortable in most bases. Arbutin needs pH control to stay stable and can discolour over shelf life if that control slips. Vitamin C in its plain ascorbic acid form is notoriously unstable to light, heat, and oxygen, which is why so much of the market uses derivatives or airless packaging instead.
None of them produces the abrupt effect that made mercury attractive. That is the honest version of the conversation, and it changes the marketing rather than the chemistry: the claim becomes gradual improvement in evenness of tone, supported over weeks, rather than a fast visible shift. Brands that write the claim before they lock the formula tend to end up promising something the replacement actives cannot deliver, which is a different kind of labelling and advertising exposure.
For sourcing teams the immediate to-do list is short. Confirm routing with your forwarder for anything transiting Macao after the effective date. Pull the heavy metal test records for your current raw material suppliers and check that the methods are named. And if a lightening product in your range came through an acquisition or a legacy contract manufacturer, verify it rather than assume it.
“Regulatory news like this tends to trigger a wave of buyer questions almost overnight — brands want to know whether their current formulations, or a competitor’s, are exposed before it becomes a headline in their own market. What we consistently tell clients is that safety compliance is no longer just a legal checkbox; retail buyers and marketplaces increasingly treat it as a trust signal they put in front of consumers. The brands getting ahead of regional bans, rather than reacting after the fact, are the ones we see winning shelf space with more risk-averse retail partners.” — Hyejin Cho, Digital Marketing Specialist, Marketing and Communication Team at SPSCOS