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Cooking oil is a staple food widely used in daily cooking. However, repeated use of cooking oil, resulting in its conversion into used cooking oil, can have negative impacts on both health and the environment. Used cooking oil that has changed color and quality is carcinogenic and has the potential to increase the risk of cardiovascular disease if consumed again. Furthermore, improper disposal of used cooking oil can cause environmental pollution because it is difficult to decompose. This study aims to examine the wise management of household waste, especially used cooking oil, by utilizing it into products with utility value. One form of utilization is processing used cooking oil into environmentally friendly soap for laundry purposes. This activity was carried out as a form of community service through training in making soap from used cooking oil with the addition of essential oils for aromatherapy for residents of Pasar Rawa Village, Gebang District, Langkat Regency. The research method used was qualitative, with observation and direct participation in the training activities. The results showed that participants, particularly housewives, demonstrated high enthusiasm and were actively involved in both the presentation and the soap-making practices. This activity not only raised public awareness of the importance of managing used cooking oil waste but also provided new skills that have the potential to support family economic growth.

This study aims to analyze the effect of the price of packaged cooking oil and bulk cooking oil on the elasticity of demand as one of the staple foods in Ciawitali Market, Garut Regency. The approach used is a quantitative descriptive method with a focus on associative analysis. Data were collected through observation and interviews in the period of September and October 2025. Then processed using simple linear regression analysis and demand elasticity analysis. The results show that the demand for both types of cooking oil is strongly influenced by price. For packaged cooking oil, it shows that 81.6% of the variation is influenced by price while the rest is influenced by other factors. For bulk cooking oil, it shows that 94.1% is influenced by price with an elasticity value of -6.346, which also shows elastic properties but lower than packaged oil which has an elasticity of -22.15. These results indicate that the increase in the price of packaged and bulk oil significantly reduces the amount of demand, with the greatest effect occurring on packaged oil because consumers tend to switch to more economical bulk oil.

This study explores the practice of participatory communication and creative production implemented by the Anggrek Waste Bank along the Ciliwung River as an educational strategy for flood disaster mitigation. The research aims to understand how community-based waste management initiatives can serve as platforms for environmental learning and social empowerment. Using a qualitative approach with a case study method, this study investigates social dynamics, interaction patterns, and meanings constructed by residents through collaborative waste management and creative production activities. Data were collected through observation, in-depth interviews, and documentation. The findings reveal that participatory communication is manifested not only in formal education, counseling, or campaigns, but also in everyday interactions, creative workshops, and collective community work. Creative products such as recycled crafts, soap made from used cooking oil, and eco enzymes function as symbolic communication media that persuasively convey ecological messages while providing tangible economic benefits. These practices foster a sense of ecological responsibility, strengthen social solidarity, and enhance community resilience to flooding. This study concludes that participatory communication integrated with creative production serves as an effective model for promoting sustainable behavior and community-based flood mitigation in urban environments.

This community service program was designed to empower the women’s group PKK RT 01 RW 08 in Tembalang, Semarang, through education and innovation in processing used cooking oil into eco-friendly floor cleaner. Household cooking oil waste, commonly known as “jelantah,” is often discarded and contributes to environmental pollution, while in fact it can be reused as a valuable resource. The program aimed not only to provide technical skills but also to increase environmental awareness and promote sustainable household practices. The implementation took place over three months (June–August 2025) using a participatory approach that included socialization, training, mentoring, and evaluation. During the activities, participants were introduced to the principles of green chemistry, practiced step-by-step floor cleaner production, and learned packaging and digital marketing techniques. As a result, the group successfully produced 65 bottles of “Lely Eco Floor” cleaner (260% of the initial target), distributed them for household use, and established an environmental movement group named “Lely Bersih Lestari.” Pre- and post-test scores indicated significant improvement in participants’ knowledge and skills. The program brought multiple impacts: reducing oil waste pollution, enhancing social cohesion, and opening opportunities for micro-scale entrepreneurship. Overall, this activity demonstrates how simple technology and community engagement can support sustainable development and women’s empowerment at the grassroots level.

Used cooking oil is a household waste that may pollute the environment and harm human health if disposed of or reused improperly. This community service program aimed to provide a waste management solution while enhancing the community’s economic skills through training on producing aromatherapy candles from used cooking oil. The implementation method included awareness sessions on the hazards of used cooking oil, technical training using a learning by doing approach, and assistance in production and marketing. A total of 30 participants from the Family Welfare Movement (PKK) took part in the program. The results indicated improved knowledge and skills, the production of approximately 50 aromatherapy candles with lavender, rose, and vanilla scents, and the establishment of a community group committed to continuing independent production. The program contributed positively to the environment by reducing around 15 liters of waste oil per month and created new entrepreneurial opportunities for residents. Therefore, this initiative can serve as a sustainable community empowerment model based on circular economy principles.

Although often overlooked as household waste, used cooking oil has great potential to produce environmentally friendly products. Fourth semester students of the Business Administration Program were trained to make aromatherapy candles from used cooking oil through this community service activity. The goal was to increase knowledge about the circular economy, encourage creativity, and foster students' entrepreneurial spirit. Socialization, hands-on practice, pre-post test evaluation, and participatory discussion were the methods of the activity. The results showed a significant increase in understanding and recycling skills. This activity shows that innovation based on household waste can support environmental sustainability while producing products with sales value.

Legal protection for consumers is an important issue in maintaining public trust in products circulating in the market, especially in subsidized cooking oil products. Decreasing quality or cutting product content can affect consumer perception, which has an impact on decreasing trust in the product brand. This study aims to analyze the impact of legal protection on the consequences of cutting subsidized cooking oil and how this incident affects public trust. The research method used is a qualitative approach with a case study analysis of the event of cutting the contents of cooking oil products by PT AEGA. The results of the study indicate that non-compliance with product quality standards can cause consumer distrust and worsen the brand image that has been identified with the government subsidy program. Therefore, it is important for the government and business actors to increase transparency, supervision, and law enforcement so that the public does not feel disadvantaged and continues to trust the products they consume. This study also recommends strengthening regulations and legal counseling to the public to increase their awareness and participation in consumer protection.

Aromatherapy candles made from used cooking oil represent an eco-friendly and economically valuable entrepreneurial innovation. This proposal presents the utilization of used frying oil as a base material in producing aromatherapy candles, aiming to support the circular economy concept and provide an alternative solution to environmental pollution. The product formulation combines paraffin, beeswax, and natural essential oils, offering relaxation and comfort while also opening up new business opportunities. SWOT analysis and marketing strategies based on the 4Ps (Product, Price, Place, Promotion) serve as the foundation for business development. The results of the study show that aromatherapy candle businesses have strong potential to attract consumer interest, especially among young people, and can deliver significant social, economic, and environmental impact.

Bankruptcy as a legal remedy for creditors to receive payment from debtors can cause losses for concurrent creditors. The absence of the right to precedence, resulting in concurrent creditors can only receive payment if preferred creditors and separatist creditors have received payment, therefore, it is important to provide legal protection for concurrent creditors in obtaining their right to receive payment. In this research, a normative juridical method will be used through literature study. By using secondary legal sources as well as primary and secondary legal materials relevant to the protection of concurrent creditors in bankruptcy cases. In the research results, it was found that there is an urgency to apply the insolvency test as an effort to protect concurrent creditors from losses to debtors declared bankrupt. Then, it is also important for concurrent creditors to file legal remedies in the event that the debtor is declared bankrupt, but still has the financial ability to pay his debts.

The use of used cooking oil (mijel) as a raw material in making aromatherapy candles offers career opportunities for students of Al-Ma'wa Tembung Mosque. This community service activity aims to provide training in processing used cooking oil into aromatherapy candles while increasing awareness of the importance of recycling waste oil. The methodology used is practical training, discussion and demonstration. The results of the activity showed high enthusiasm from the participants and the potential for developing aromatherapy candle businesses among teenagers.

The large amount of used cooking oil that is thrown into the environment by the community is an urgency that must be addressed. Therefore, it is necessary to handle it efficiently so that it can be used as a product and has economic selling value. Based on the existing urgency as an effort to reduce the impact of environmental pollution, this service was held with the aim of utilizing used cooking oil into solid soap through a saponification process with the help of a strong base such as Sodium Hydroxide (NaOH). The method used was a demonstration of making solid soap which was witnessed by residents of Karang Tunggal village. Apart from preventing the impact of environmental pollution, used cooking oil that is used repeatedly can also harm health, so this service activity is expected to solve this problem and increase public awareness and skills regarding the procedures for processing used cooking oil into solid soap. The results of service activities are training in soap making and distribution of solid soap to the community. It is hoped that service activities can increase understanding and skills in waste management to become more useful and have economic value.

The large amount of used cooking oil that is thrown into the environment by the community is an urgency that must be addressed. Therefore, it is necessary to handle it efficiently so that it can be used as a product and has economic selling value. Based on the existing urgency as an effort to reduce the impact of environmental pollution, this service was held with the aim of utilizing used cooking oil into solid soap through a saponification process with the help of a strong base such as Sodium Hydroxide (NaOH). The method used was a demonstration of making solid soap which was witnessed by residents of Karang Tunggal village. Apart from preventing the impact of environmental pollution, used cooking oil that is used repeatedly can also harm health, so this service activity is expected to solve this problem and increase public awareness and skills regarding the procedures for processing used cooking oil into solid soap. The results of service activities are training in soap making and distribution of solid soap to the community. It is hoped that service activities can increase understanding and skills in waste management to become more useful and have economic value.