Authorization under REACH is required for substances of very high concern (SVHC). These include substances that are carcinogenic, mutagenic, toxic to reproduction, persistent, bioaccumulative, and toxic, or very persistent and very bioaccumulative. Companies must apply for authorization to continue using these substances, demonstrating that the risks are adequately controlled or that the socio-economic benefits outweigh the risks. The ECHA and the European Commission review these applications before granting or denying authorization.
