The Centre of Lipids Engineering & Applied Research (CLEAR) has successfully organising ICoST for the fourth edition with program theme, “Separation Technology: Rising towards Greener Future”. The conference has been held at Holiday Villa Johor Bahru on 18 – 19th February 2023 and been officiated by UTM Deputy Vice Chancellor (Research and Innovation). The conference has received 70 participations from both academic and industry players from Indonesia, Japan, Korea, Nigeria and Baghdad, including Malaysia and 58 article papers have been published in the AIP Conference Proceedings and Materials Today Proceeding.