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California's New Bill Seeks Diaper Chemical Transparency

By Editor • August 16, 2026 • 2 min read

In a significant move towards consumer safety, California is set to introduce legislation mandating diaper manufacturers to disclose the potentially harmful chemicals present in their products. This initiative aims to shed light on the often-secretive composition of disposable diapers, which can harbor a range of toxic substances.

Among the culprits identified are phthalates, lead, Pfas, and various volatile organic compounds (VOCs), all of which pose health risks to infants whose skin is more permeable than that of adults. The bill passed the California Assembly with an overwhelming vote of 68-1 and is anticipated to reach the state Senate shortly.

California Assembly member Marc Berman, who spearheaded the bill, emphasized the importance of transparency, stating, "Parents deserve better than a guessing game, especially when it comes to a product that will be touching their babies’ skin for every minute of every day for the first two or three years of their lives." The legislation has garnered support from over 150 public health organizations.

Under this new law, by 2028, manufacturers will be required to publish a list of all intentionally added ingredients on a publicly accessible website, detailing each ingredient's specific function. By January 1, 2029, this information will also need to be included on packaging. This requirement is expected to press diaper companies to opt for less toxic materials.

Research indicates that various toxic chemicals are often added to diapers for specific purposes: Pfas serve as moisture barriers, while phthalates enhance plastic flexibility. Testing has previously revealed the presence of these harmful substances in popular diaper brands, raising concerns about their long-term effects on infant health.

While advocates are pushing for greater transparency, they have opted against proposing a complete ban on specific chemicals, fearing that such measures could stall the bill’s progress. California Governor Gavin Newsom, who has a history of vetoing stringent chemical regulations, will be a key figure in the bill's future.

Experts believe that the proposed legislation could set a precedent for other states to follow, as California often leads the way in environmental and consumer protection laws. As Oriene Shin from Consumer Reports noted, "Transparency laws can move the marketplace," giving consumers the power to make informed choices.

For parents, the bill represents a step towards ensuring that the products they use for their children are safe. With practical advice available, such as opting for fragrance-free options or considering cloth diapers, families can actively seek to minimize their exposure to harmful chemicals.

Source: www.theguardian.com

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