How to Make Liquid Soap (with Pictures) - wikiHow Life- how to make washing powder at home lemon washing soap out of biodiesel ,Sep 30, 2019·Use a bar of facial soap to make a liquid soap you can use on your face. Use a bar of antibacterial soap to make a good cleansing hand soap to use in your kitchen or bathroom. Use a bar of moisturizing soap to make a liquid soap you can use as body wash. Use unscented soap if you want to add your own scent to create customized liquid soap.Fresh Lemon Homemade Dishwasher Detergent - Bren DidAug 17, 2016·Fresh Lemon Homemade Dishwasher Detergent Cost. The price of the detergent varies with lemon prices: Lemons, approximately $1.30; Kosher salt, approximately $0.35; White vinegar, approximately $0.10. Total cost -> $1.75 for 32 ounces or about $0.10 a wash. My favorite store-bought dishwasher detergent costs about $0.19 a wash.