The way forward for assessing the human health safety of cosmetics in the EU: Proceedings of Workshop 2.

Under the European Cosmetic Regulation, safety assessments of cosmetics and their ingredients must be conducted without the use of animals. This regulatory requirement poses a number of challenges, as validated alternative methods are only available for some of the toxicological endpoints that are typically considered in standard human health risk assessments. Despite significant progress since the ban in 2013, particularly in the development of New Approach Methodologies (NAMs) for local and acute toxicity, and for mutagenicity/genotoxicity, there remains an urgent need for non-animal test methods to assess systemic toxicity, which often becomes evident after repeated or long-term exposure. Currently, no validated animal-free alternatives are available for assessing sub-acute, sub-chronic and chronic toxicity, carcinogenicity, developmental/reproductive toxicity, or for a major part of toxicokinetics. In response to these challenges, the Methodology Working Group of the Scientific Committee on Consumer Safety organised a dedicated workshop in December 2024 to discuss advances in the application of Next Generation Risk Assessment (NGRA) as a strategic animal-free approach for the safety assessment of cosmetic ingredients. The workshop focused on a number of important key issues for the practical application of NAMs and NGRA, their regulatory acceptance and identification of possible (partial) solutions to overcome existing limitations.