The United Kingdom’s (UK) Health and Safety Executive (HSE) announced in its January 17, 2024, UK REACH ebulletin that it recommended that diisohexyl phthalate (DIHxP) be added to the list of substances subject to authorization (Annex 14) for UK REACH. As reported in our October 13, 2023, blog item, the European Chemicals Agency (ECHA) prioritized DIHxP and included DIHxP in its April 12, 2023, recommendation for the inclusion of substances in the European Union (EU) Registration, Evaluation, Authorisation and Restriction of Chemicals regulation (REACH). HSE used the results from ECHA’s prioritization exercise to inform its draft recommendation. HSE notes that this is its second recommendation (as the Agency for UK REACH) to the Appropriate Authorities (the Department for Environment, Food and Rural Affairs (Defra) Secretary of State and the Scottish and Welsh Ministers), who will make a decision on the addition to Annex 14.