PFAS (per- and polyfluorinated alkyl substances), or highly fluorinated substances, is the collective name for a large group of substances with wide use in society, e.g. due to the property of being grease and water repellent. PFAS substances are difficult to break down and some are harmful to human health and the environment.
In January 2023, ChemSec, provider of the SIN list, makes a major change to their list, where they include 370 PFAS substances in the list. From approx. 1000 substances in total, there will now be approx. 1400 substances in total. Here you can read more about the change on ChemSec's website.
With this change, you may get more products that match the SIN list in iChemistry.
With upcoming restrictions on PFAS on EU level (read more about it here) and known health and environmental problems, there is every reason to substitute products containing PFAS already now, to the extent that is possible for you.