Effective August 28, 2024, Anvisa’s Collegiate Board Resolution (RDC) 894/2024 introduces mandatory Good Practices of Cosmetovigilance for all cosmetic companies operating in Brazil. The regulation requires that serious adverse events associated with cosmetic products be reported through Anvisa’s official system, Notivisa (professional). To submit notifications, companies and their designated employees must complete prior registration via Anvisa’s company registration portal. The process involves specific steps and requires correct browser use, supported by the guidance document Step by step for company registration. If difficulties arise, companies can seek assistance through Anvisa’s service channels. This new framework strengthens consumer protection by ensuring systematic monitoring and evaluation of risks related to cosmetics. Anvisa highlights that cosmetovigilance is a key tool for public health, relying on the collaboration of the regulated sector to ensure the effective application of the rule and continuous improvement in the safety of cosmetic products in the Brazilian market.