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Following an agreement adopted in June 2025 between the European Parliament and the Council, the new “one substance, one assessment” legislative framework came into force on 1st January 2026. Its aim is to make chemical safety assessments within the European Union (EU) simpler, more consistent, and more transparent.
Previously, the regulatory framework for chemicals consisted of dozens of standards. Since 1st January 2026, assessments have been simplified by the implementation of the “one substance, one assessment” approach, which comprises three acts:
Data and information on chemicals will be consolidated on a single platform managed by the European Chemicals Agency (ECHA). This platform, which will then be accessible to all, should be operational within three years. It will contain studies carried out on the products concerned, centralize human biomonitoring information generated in the EU, and also include an early warning system for emerging chemical risks.
2. A directive on the redistribution of technical tasks to the European Chemicals Agency (ECHA):
In order to increase transparency, procedures relating to the list of substances subject to restrictions in the EU are no longer the responsibility of the Commission but now fall under the remit of the European Chemicals Agency (ECHA), which is perceived as more legitimate. The Commission nevertheless has the option of reviewing this list periodically.
3. A regulation aimed at redistributing technical tasks and improving cooperation between EU agencies:
Cooperation between the Commission, ECHA, and other EU bodies is strengthened because it is seen as essential to the success of streamlining. In addition, exchanges between these bodies are facilitated, in particular by a specific procedure in the event of scientific disagreements.
