California Passes Labeling & Website Ingredient Disclosure Law for Children’s Diapers

On September 28, 2026, the California Governor signed AB1901 into law, which requires children’s diaper packaging to have an ingredient list and requires ingredient information to be disclosed on the manufacturer’s internet website.

Website Requirements
On or before January 1, 2029, children’s diapers solid, distributed, or manufactured in the state shall display on a dedicated website on the manufacturer’s internet website a list of all the children’s diaper’s intentionally added ingredients for each specific children’s diaper product. The website shall be displayed and organized in an easily and publicly identifiable manner. The ingredients shall be clearly grouped and displayed in order of predominance by weight, and the list of ingredients shall include the following information:

• Chemical or raw material name
• The Chemical Abstract Service (CAS) number
• All specific functions or purposes for use in the children’s diapers

Note: This information shall be listed alongside each other

Any product details page where the diapers are sold online may display a list, or a link to the dedicated web page on the manufacturer’s internet website, with a list of all the children’s diaper’s intentionally added ingredients.

Labeling Requirements
On or before January 1, 2029, all children’s diapers distributed or manufactured in the state shall include the following information on the outermost packaging: 

• A list of all intentionally added ingredients
• The internet website for a dedicated web page on the manufacturer’s internet website that provides all the required information listed above.

On or before July 1, 2029, all children’s diapers sold in the state shall be labeled as indicated above.

Definitions

• “Children’s diaper” means an absorbent garment or product that is designed, manufactured, processed, fabricated, packaged, or marketed to be worn by children, including infants and toddlers, and to absorb or contain urine and fecal waste, including, but not limited to, a disposable brief, protective underwear, liner, booster, insert, or underpad. “Children’s diaper” includes any of a diaper’s components, including, but not limited to, wetness indicators, absorbent linings or fillings, outer shells, adhesive tabs, dyes, or fragrance.
• “Intentionally added ingredients” means a chemical, or chemicals, that a manufacturer has intentionally added to children’s diapers and that has a functional or technical effect in the product, including a component of an intentionally added chemical or an intentional breakdown product of an added chemical that also has a functional or technical effect in children’s diapers.

Link:
https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202520260AB1901

How Does this Impact You? Contact Us to Discuss 
If you have any comments and/or questions, please contact your customer service representative or visit: www.cps.bureauveritas.com
26B-081