On April 27, 2026, the World Trade Organization (WTO) circulated addendum G/TBT/N/USA/2258/Add.1 submitted by the United States, notifying modifications to California's Safer Consumer Products (SCP) Regulations. The changes are introduced by the California Department of Toxic Substances Control (DTSC) as part of an ongoing rulemaking process. The amendment expands the scope of the proposed regulation by refining technical provisions related to the listing of manual dish detergents and shampoos containing 1,4-dioxane at concentrations above 1 part per million (ppm) as Priority Products. The modifications also add specific regulatory subsections to better define DTSC's determination that 1,4-dioxane is a persistent, mobile, and toxic chemical. Additional toxicological details, including species-specific observations, have been incorporated to strengthen the scientific basis of the regulation. The revised proposal remains open for public consultation, with a new comment deadline set for May 11, 2026. Stakeholders are invited to submit feedback through the designated U.S. WTO TBT Enquiry Point or directly to DTSC. The objective of the measure is to strengthen consumer protection and reduce exposure to hazardous chemicals in consumer products.
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