Afrin Fakhrun NisaCantika ImarsaBaiq Natasya Aulia Eka PutriIntan Permata Sari2024-05-302024-05-302022-02-16https://geniusinsan.usim.edu.my/e-proceeding/https://oarep.usim.edu.my/handle/123456789/164192nd Insan Junior Researchers International Conference 2021 (iJURECON 2021) “STREAM for a Better Life” 15-17th October 2021 Organized By :Kolej GENIUS Insan of Universiti Sains Islam MalaysiaWaste cooking oil is one of the primary necessities that produced by most citizen. It is made as side product while they frying. If this side product is not appropriately recycled, it will make a harm to our environment. Some of citizen also used this kind of cooking oil many times, thus increase the chance to caught a disease such as cancer, stroke, etc. Many citizens didn't know how to deal with cooking oil waste. If we deal with this waste correctly, such as process it into a soap, we can reduce its impact as stated before. Therefore, this research aim to make a dish soap from waste cooking oil. We will purify the waste oil with banana peels. There are 3 processes that will be conducted. First is despising, second is saponification, and lastly is organoleptic test. The test will determine and evaluate the quality of the dish soap. From the test that we have done, we can conclude that the dish soap is good enough to be a producten-USwaste cooking oil, dish soap, organoleptic testArticle145147