California Legislates Diaper Ingredient Transparency
The California State Senate passed a bill Thursday that requires manufacturers to disclose all ingredients found in disposable diapers. Assembly Bill 1901 mandates that companies explain why each ingredient is necessary for the product. Once Governor Gavin Newsom signs the legislation, this information must appear online by the end of 2028. Printed labels on packages must reflect these disclosures by January 2029.
This legislative action marks a shift in how baby products are regulated. Current federal law does not require diaper manufacturers to list ingredients. Actor Hilary Swank, who collaborated with the Environmental Working Group to support the bill, noted that parents often assume products are safe because they are marketed for children. Her involvement began after she learned about potential health risks during her own pregnancy. New York and Illinois have already enacted similar transparency requirements in recent years.
The Risks of Hidden Chemical Exposure
Experts point to the permeability of a baby’s skin as a primary concern. Because infants wear diapers 24 hours a day, they remain in constant contact with materials that may release volatile organic compounds. These substances originate from inks, dyes, adhesives, and chlorine bleaching agents. Some studies link these compounds to respiratory irritation and allergic reactions. Researchers have also identified traces of acrylamide in certain inner layers of diapers, a chemical linked to cancer in animal studies.
Quaternary ammonium compounds represent another area of scientific concern. These chemicals are frequently found in wetness indicators and wipes. Research conducted over the last decade suggests these compounds can affect the immune system and the developing brain. Rebecca Fuoco of the Green Science Policy Institute has labeled these chemicals a growing public health issue comparable to PFAS and phthalates. Phthalates are specifically known for providing flexibility to plastic components, yet they are tied to reproductive issues and hormonal changes.
Industry Response and Practical Consumer Guidance
The Center for Baby and Adult Hygiene Products maintains confidence in the safety of current diaper designs. Deputy Director Giovanna Komst stated that the industry supports transparency but prefers consistency across states and product categories. Manufacturers argue that disclosure requirements should align with established regulatory practices to provide meaningful data. Meanwhile, current labels often rely on vague terms like fragrance or adhesive, which prevents parents from knowing exactly what substances contact their child’s skin.
Parents looking to reduce exposure can follow guidance from advocacy groups like the Environmental Working Group. Experts recommend selecting diapers without dyes, patterns, or wetness indicators. Fragrance-free options are also advised to limit unnecessary chemical contact. Hilary Swank suggests that parents prioritize items with the highest frequency of contact, such as diapers, wipes, and skin creams. She encourages parents to focus on small, actionable changes rather than attempting to overhaul their entire home environment simultaneously.
This legislation represents a growing trend toward product accountability in the United States. As California joins other states in mandating these disclosures, the broader industry may face pressure to standardize safety information. Future developments will determine if federal agencies decide to adopt similar requirements to create a uniform standard for all parents nationwide. For now, consumers should watch for updated packaging in late 2028 and 2029 as companies adjust to the new mandates.