Comment by turtlesdown11

seems like prop 65 works well

https://www.washingtonpost.com/climate-solutions/2025/02/12/...

> The study, published Wednesday in Environmental Science & Technology, found that California’s right-to-know law, also known as Proposition 65, has effectively swayed dozens of companies from using chemicals known to cause cancer, reproductive harm or birth defects.

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> Researchers interviewed 32 businesses from a variety of sectors including personal care, clothing and health care, concluding that the law has led manufacturers to remove toxic chemicals from their products. And the impact is significant: 78 percent of interviewees said Proposition 65 prompted them to reformulate their ingredients; 81 percent of manufacturers said the law tells them which chemicals to avoid; 69 percent said it promotes transparency about ingredients and the supply chain.