California lawmakers have advanced legislation that would require disposable diaper manufacturers to reveal the chemical composition of their products. The bill, which received overwhelming approval in the state assembly with a 68-1 vote, is expected to move forward in the state senate in the coming weeks.
Disposable diapers frequently contain hazardous substances including phthalates, lead, PFAS compounds, arsenic, and volatile organic compounds, along with “fragrance” additives that may encompass up to 1,200 potentially harmful chemical variations. The concern is particularly acute given that infants wear diapers continuously for years while their skin remains significantly thinner and more absorbent than adult skin, making them vulnerable to health risks from endocrine-disrupting chemicals.
If enacted, the law would mandate that manufacturers disclose all intentionally added ingredients and their specific functions on a publicly accessible website by 2028, with packaging labels following by early 2029. Supporters argue the measure would leverage market forces to encourage manufacturers to reduce toxic ingredients. The proposal has garnered backing from approximately 150 public health organizations and aims to provide parents with transparency about products in direct contact with their children’s skin.
The diaper industry maintains that products meet established safety standards and have demonstrated safety through decades of use. However, advocates contend that existing confidentiality laws do not prevent disclosure of diaper ingredients.
