The aim of this video is to present the IUCLID 5.5 dossier creation process for a biocidal product (in conformity with the Biocidal Products Regulation). Different steps are described: creation of a substance dataset, creation of a biocidal product dataset with special emphasis on product composition, and creation of the biocidal product authorisation dossier. The specific new features of IUCLID 5.5 related to biocides are also briefly introduced.