Heavy metals are ubiquitously present in the environment surrounding us. Heavy metals containing ingredients such as thimerosal (mercury) and lead acetate were used as cosmetic ingredients in the past. They were also used as reaction catalysts during chemical synthesis and for manufacturing industrial equipment, containers or closures.
Cleaning product labels are no different than labels for other consumer goods when disclosure of ingredients comes into play. Organizations should exercise safety practices that will protect the consumers and workers during consumption.
The California Cleaning Product Right to Know Act of 2017 (US Senate Bill 258) was signed into law on October 15, 2017, and came into effect in 2020 and 2021. The regulation and requirements are summarized here for your ready reference: