As the human population increases globally, the waste production rate from various types of waste such as used cooking oil and fruit waste also increases. The development of this dish soap bar helps in spreading awareness for people not to discharge used cooking oil and fruit waste into the drainage system. Instead, one can opt to transform these waste products into soap. This study aims to develop a dish soap bar using used cooking oil and pineapple waste. The efficacy of the soap was evaluated following the eco-friendly product criteria. In this study, eight types of dish soap bars were developed with two variables namely concentration and type of pineapple parts. The whole parts of pineapple waste were prepared with 100%, 75%, 50%, and 0% concentration. Different parts with 100% concentrations were developed from peel, core, stem, and crown parts. The dish soap bar samples were evaluated for their efficacy based on pH value, moisture content, and foam height. It has been compared among samples, control, and commercial soaps. The commercial brand, Labour, has the highest foam height (6.61 cm) and pH value (10.53) and the sample core (Conc. 100%) showed the highest moisture content (12.19%). The significant value among samples, control, and commercial soap for each pH value, foam height, and moisture content was determined by using SPSS21 software. The pH value and foam height of the samples were highly significant (F1,32 = 16.275, p <0.001). The moisture content also showed a significant difference (F1,32 = 2.889, p <0.05). The Dunnett multiple methods were used to determine the most samples that were closed to control. Five samples were close to the control. Brine shrimp test the toxicity of the sample. The average survival rate of brine shrimp for the whole part (Conc. 50%) dish soap bar sample was 36.7%. The sensory evaluation proceeded to look at the overall acceptance of the sample among 50 respondents and from the evaluation, 36 respondents (72%) were very satisfied with the final product sample whole part (Conc. 50%).
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