The European Commission’s (EC’s) Joint Research Center (JRC) has issued a report outlining concerns related to labeling and reporting regulations for nanomaterials in consumer products, including cosmetics, in the European Union (EU ). Although the safety of products containing nanomaterials is regulated by several EU legal acts that address chemicals and products in general, including the Nanomaterial Annexes to the regulations governing the Registration, Evaluation, Authorisation and Restriction of Chemicals, the Classification and Labeling of Products Regulation and the General Products Safety Directive, several stakeholders—the European Parliament and some EU member states and non-governmental organizations—have requested more transparency and traceability concerning potential risks.

Noting that (i) information requirements and transparency measures (labeling/product register) should be based on an (internationally) harmonized definition of nanomaterial for legal clarity and enforceability, and (ii) accurate labeling and affordable monitoring is “complicated,” the report suggests, among other things, that “further developments and standardization in nanomaterial detection and characterization methods are needed and reference materials for reliable metrology at the nanoscale are necessary.