Prop 65 Roundup - May 2026

Prop. 65 Cancer Warnings Face New First Amendment Lawsuit From Cosmetics Makers

Daily Journal

In its complaint, the Personal Care Products Council argues that mandatory warnings for products containing diethanolamine constitute misleading compelled speech about risks not established in real-world product use.

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OEHHA Publishes Updated Guidance on Seafood Safety Following Oil Spills 

The Office of Environmental Health Hazard Assessment (OEHHA) published updated guidance evaluating seafood safety and consumption following oil spill incidents in California waters. The guidance explains how OEHHA assesses potential chemical contamination in seafood, identifies chemicals of concern such as polycyclic aromatic hydrocarbons, and makes recommendations regarding fisheries closures and reopenings.

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OEHHA Notices

OEHHA Advances Bioassay Screening to Evaluate Emerging Contaminants 

OEHHA, in collaboration with the Southern California Coastal Water Research Project, announced completion of the first phase of a study using cell‑based bioassays to evaluate potential health risks associated with understudied chemicals found in consumer products and the environment. The study aims to improve OEHHA’s ability to screen chemicals of emerging concern and support more efficient, health‑protective risk assessment approaches.

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OEHHA Issues Health Question and Answer on Thuricide® Insecticidal Product for Spongy Moth

OEHHA released a health question and answer document addressing potential human health effects associated with the use of Thuricide® (BtK) in spongy moth control programs. The document explains OEHHA’s evaluation of exposure pathways and health considerations for residents and workers in treated areas.

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