Khoiriyatun Widyastuti, an Undip Thematic Real Work College (KKN) student in collaboration with UNICEF with the theme “Synergy Between Academics and Government in Supporting the Achievement of SDGs through Accelerating Vaccination and Prevention of the Spread of Covid-19 in Central Java Province”, has one work program, namely Training on Making Hand Sanitizer for Wonowoso Village residents. The selected residents are 3 people who can represent the residents of Wonowoso Village, so as not to cause a crowd.

Covid-19 is still a scourge for society. Especially at the end of 2021 and towards the new year of 2022, the possibility of a spike in the number of Covid-19 transmissions is something that is certainly very easy to happen. Therefore, preventive measures are needed to prevent this. One effort that can be done by the community is to always wash their hands. A practical way to clean hands is to use a Hand Sanitizer. The advantages of Hand Sanitizer are practical and efficient and able to kill germs in a relatively fast time because it contains alcohol compounds (propanol, isopropanol, ethanol) with a concentration of 60-80% and phenol groups (chlorhexidine, triclosan).

The addition of Aloe Vera (Aloe vera L.) extract in the manufacture of Hand Sanitizer has many benefits, such as having broad-spectrum antibacterial activity, both to inhibit gram-positive and gram-negative bacteria. According to research conducted by Susilo et al., 2020, Aloe Vera contains phytochemicals that have been identified such as saponins, glycosides, alkaloids, saponins, and tannins which are active ingredients that have the potential as antibacterial. In addition, Aloe Vera is also a plant that is often found in the homes of Wonowoso Village residents, because it is very easy to grow and easy to cultivate. So it is very suitable to be used as a material for making Hand Sanitizer.

Making Hand Sanitizer is quite easy and does not require complicated equipment. The stages of preparation of aloe vera ingredients, by choosing aloe that is fresh and thick flesh. Next, scrape the flesh of the fruit using a knife or spoon. Then prepare each tool and material, such as 300 ml alcohol with a concentration of 70%, a spray bottle, a filter, and a blender. Next, the aloe vera is put into a blender machine to be crushed and filtered. The aloe vera filter was mixed with 70% alcohol with a composition of 275 ml and aloe vera extract 43 ml. then stirred until homogeneous. After that put it in a spray bottle and fill it to the brim. The hope is that with the socialization of the manufacture and training of making hand sanitizers, residents can transmit information to other residents. That way, our anxiety about the re-increase in the number of Covid-19 transmissions can be overcome.