Using a gentle, non toxic soap removes germs and doesn't dry out hands as much as commercial brands. This is so easy and very economical.
Mix all of the ingredients together and pour into a soap dispenser. The coconut oil or vitamin E will act as a moisturizer. Distilled water is a good choice for making your DIY hand soap as it contains fewer minerals and other stuff (found in tap water) that might interfere with the soaps sudsing capacity.
Try switching up your oils! I like lavender, lemon, and grapefruit.