Dr. Helena Kandarova, ERT is a Senior Scientist at the Institute of Pharmacology and Toxicology, Centre of Experimental Medicine, Bratislava. She also holds a position at the Institute of Biochemistry and Microbiology at the Faculty of Chemical and Food Technology (FCHPT) in Bratislava. From 2007 - 2018, Dr. Kandarova held the position of Senior Scientist and General Acting Manager for EU at MatTek Corporation, USA. She established MatTek In Vitro Life Science Laboratories in Europe and led the company in the position of Executive Director between 2009 - 2018. Dr. Kandarova is an executive board member in several European toxicology oriented organisations and member of the international expert pannels. In 2020 she was elected as president of the European Society for Toxicology in Vitro. Dr. Kandarova has been involved in many international projects aiming to validate 3D reconstructed human tissue models for topical toxicity and phototoxicity testing of chemicals, cosmetics, pesticides and medical devices. She is a co-author for several internationally implemented protocols that were also adopted into the OECD and ISO 10993 guidelines. She published over 60 papers and book chapters (H-index 19, over 1000 citations) and obtained several scientific awards related to the research aiming into the development and validation of alternative methods.