New York just passed the first diaper labeling law in the U.S.

Why New York’s first-of-its-kind diaper labeling law is a win for parents everywhere.

In a major victory for parental transparency, New York has just become the first state to require diaper manufacturers to list all intentionally added ingredients on packaging—a move that could transform how parents across the country choose what goes on their baby’s skin.

Signed into law in December 2024 and taking effect no later than December 2025, the legislation mandates clear labeling for both disposable and reusable baby diapers. It’s a landmark shift in a product category that, until now, has operated with surprisingly little oversight—despite being in constant contact with some of the most sensitive skin on the human body.

Why this matters for every parent

Most parents assume that if a baby product is sold in stores, it’s been thoroughly vetted for safety. But the truth is, diaper manufacturers have never been required to tell consumers what’s actually in their products. There’s no federal law requiring diaper companies to disclose ingredients, and many don’t.

That means for years, caregivers have been buying diapers with no way of knowing whether they contain potential irritants or chemicals of concern—despite repeated use on infants and toddlers whose developing bodies are especially vulnerable.

What’s actually in some diapers?

Independent studies and product tests have found a range of ingredients in some diapers that raise health and environmental questions. These include:

• Phthalates, linked to hormone disruption
• Volatile organic compounds (VOCs), which can affect respiratory health
• Chlorine-based bleaching agents, which may cause skin and lung irritation
• Fragrances, often used as catch-all terms that can hide thousands of undisclosed ingredients
• Wetness indicators that may rely on halogenated organic compounds or quaternary ammonium compounds
• Colorants and inks that could contain heavy metals
  

Related: 14 eco-friendly & natural diapers we love

These aren’t fringe concerns. One 2023 EWG-commissioned survey found that 91% of adults were worried about the safety of baby care product ingredients—and over half said they relied on labels to guide their purchasing decisions.

How the new law empowers parents

Under the new law, packaging for baby diapers sold in New York must clearly list every intentionally added ingredient in order of predominance. That includes materials in the core, topsheet, backsheet, adhesives, and dyes. Companies have until December 2025 to comply—or risk fines and possible removal from store shelves.

This level of transparency has never before been required in the U.S. diaper market. And while the law only applies in New York for now, the ripple effects are expected to be national. Brands are unlikely to create separate formulations for one state, and other states may follow suit. Consumer advocates are already pushing for similar laws in California and Washington.

What you can do now

While the law doesn’t take effect until late 2025, parents and caregivers don’t have to wait to start making informed choices. Here’s how to shop more safely now:

• Avoid diapers with added fragrance, especially if the label doesn’t explain what’s used.
• Look for totally chlorine-free or unbleached options to reduce exposure to irritants.
• Choose plain, dye-free diapers without colorful prints.
• Support brands that already disclose ingredients voluntarily—on packaging or online.
• Seek out third-party certifications. EWG’s “Verified: Baby Diapers” mark, for example, indicates products that meet strict safety and transparency criteria.

Related: Baby skin care questions answered by a pediatric dermatologist: Eczema, acne, & more

Progress, not panic

This new law isn’t about creating fear—it’s about restoring agency. Parents deserve to know what’s going on their baby’s body. With this bold move, New York is setting a precedent that puts that power back where it belongs: in the hands of caregivers.

And if the momentum continues, soon parents everywhere will no longer have to guess what’s in a diaper. They’ll know.