The REACH Regulation (EC No 1907/2006) aims to ensure a high level of protection for human health and the environment from the risks posed by chemical substances. Among its four main pillars, Registration, Evaluation, Authorisation and Restriction, the Authorisation process is often the most complex for non-specialists to understand. Yet it plays a critical role in managing the most hazardous substances on the European market.

The European Chemicals Agency (ECHA) has proposed new restrictions on hexavalent chromium (Cr(VI)) under REACH to protect workers and the environment. Key industrial uses may continue only if exposure and emission limits are met, while a public consultation starting June 18, 2025 allows companies to provide technical and socio-economic data.