Washington strengthens cosmetic safety with formaldehyde ban

Washington State has passed a new regulation banning the use of formaldehyde and formaldehyde-releasing substances in cosmetic products, strengthening its commitment to protecting public health and aligning itself with policies already adopted in the European Union and other international markets.

This measure represents a significant change for brands operating in the United States, which will have to adapt their formulations and compliance strategies.

Table of contents

1. Cosmetic Regulation: Formaldehyde

2. Progressive application of the measure

Washington refuerza la seguridad cosmética con la prohibición del formaldehído

Cosmetic Regulation: Formaldehyde

Formaldehyde has historically been used as a preservative and antimicrobial agent in various product categories—including hair treatments, nail hardeners, and certain facial cosmetics. However, its potential to cause irritation, skin sensitization, and adverse respiratory effects, in addition to its classification as a possible human carcinogen, has led to its gradual withdrawal from the market in various jurisdictions.

The new regulations not only ban the direct use of formaldehyde, but also the use of substances capable of releasing it under normal conditions of use. In total, the regulatory text identifies 25 formaldehyde-releasing compounds that will be restricted when intentionally added to cosmetic products.

For companies with a presence or distribution in the state, this decision entails a detailed review of formulations, ingredient sheets, and supplier documentation, ensuring the deliberate absence of formaldehyde and its releasers. It is also recommended to strengthen traceability in the supply chain and keep all technical evidence that may be requested in the event of an inspection up to date.

From a regulatory compliance perspective, this measure highlights the need for preventive chemical risk management and greater transparency in the composition of cosmetic products.

Progressive application of the measure

The regulation was approved in late August 2025 and will go into effect at the end of September. Mandatory restrictions will begin to apply in January 2027, allowing a sufficient transition period for product reformulation. Retailers in the state will be able to continue selling previous stocks until the end of that year.

With this initiative, Washington is among the pioneering U.S. states in adopting stricter cosmetic safety criteria, reflecting a global trend toward safer, more transparent products that meet international standards.

Contacta con nuestro equipo de expertos en regulación cosmética