[header] How to make dog shampoo [title] Wash your dog with dish soap, vinegar, and glycerin. [step] A simple, all purpose dog shampoo can be made using one cup of dish soap, one cup of apple cider vinegar, and 2 ounces of glycerin. Glycerin is a form of sugar alcohol you can purchase online or at a drug store. 
You will also want jars to mix your shampoo, and an empty shampoo bottle to put it in when you're finished. [substeps] Pour all your ingredients into a jar, making sure to pour the dish soap first.