On the 8th of October the SIN List was updated with additional 28 chemicals that ChemSec has identified as being Substances of Very High Concern. Many of these chemicals have been used to replace better known hazardous substances, but are in fact just as problematic. Two such examples are Bisphenol F and Bisphenol S, added to the SIN List today. With this update the SIN List has also been divided into 31 groups such as phthalates, bisphenols and perfluorinated compounds. Today we also present a new tool, SINimilarity, were it is possible to search among 80,000 chemicals to find out if they are similar to any of the chemicals on the SIN List.