The European Commission’s (EC) Scientific Committee on Consumer Safety (SCCS) published a final opinion on June 28, 2021, on gold (nano), colloidal gold (nano), gold thioethylamino hyaluronic acid (nano), and acetyl heptapeptide-9 colloidal gold (nano). The EC asked SCCS whether the nanomaterials gold, colloidal gold, gold thioethylamino hyaluronic acid, and acetyl heptapeptide-9 colloidal gold are safe when used in leave-on skin cosmetic products according to the maximum concentrations and specifications, taking into account reasonably foreseeable exposure conditions. SCCS states that it considered all the information provided by the notifiers “and is of the opinion that it is not possible to carry out safety assessment of the nanomaterials (Gold, Colloidal Gold and Surface Modified Gold) due to limited or missing essential information.” According to SCCS, much of the information provided on toxicity relates to gold as such, and it is not possible to determine the relevance of the data for nanoforms of any of the materials under the current evaluation due to the absence of full study reports. To conduct a safety assessment of the nanomaterials, detailed data and information need to be provided on physicochemical characterization and toxicological evaluation. The final opinion states that with regard to surface modified gold, all notifications relating to acetyl heptapeptide-9 colloidal gold (nano) were withdrawn by the notifiers and therefore only gold thioethylamino hyaluronic acid is considered in the opinion.
Nano and Other Emerging Technologies Blog, 1 July 2021