New Study Finds Multiple Toxic Chemicals in Consumer Products

This May, the American Chemical Society published a new study evaluating the presence of toxic chemicals in consumer products.  The study found use of at least one chemical known to the state of California to cause cancer, reproductive issues, and/or developmental issues in over one hundred types of consumer products.

The study’s authors used data from the California Air Resources Board’s (CARB) Consumer Product Regulatory Program, which collects data on volatile organic compounds (VOCs) in California consumer products.  They then cross-referenced this data against the list of harmful chemicals regulated under California’s Safe Drinking Water and Toxic Enforcement Act, commonly known as Proposition 65 or Prop 65, to determine the hazards posed by each product category.  It should be emphasized that the study provides only a partial picture of the use of hazardous chemicals in consumer products; only about 200 of the 865 Prop 65-listed substances are VOCs.

More than 100 product categories contained at least one VOC chemical listed under Prop 65 (a “listed chemical”).  Consumers were exposed to the greatest number of listed chemicals in categories that included personal care products, cleaners, and household products; for workers, adhesives had the greatest number of listed chemicals.  The study also determined that more than 5,000 tons of listed chemicals were released from California consumer products in 2020.

In general, the product categories with the most listed chemicals were also the categories in which exposures to especially hazardous listed chemicals were highest.  After comparing the product categories with the highest numbers especially hazardous chemicals with the categories with the highest potential exposures, the researchers assembled a list of 30 product categories and 11 especially hazardous chemicals—including formaldehyde and methylene chloride—that they believed should be prioritized for regulation.

In addition, the study noted that certain occupations put workers at particular risk of exposure to listed chemicals.  For example, janitors could be exposed to five prioritized product categories, including cleaners, detergents, and degreasers.  Construction workers, nail/hair salon employees, and automobile maintenance/repair workers were also described as particularly at-risk.

Because CARB only makes data available by product category, the study did not identify particular brands or products in their analysis.