Clean the countertop and tools you will use to avoid contamination of the hand sanitiser. To protect your hands while mixing, I recommend using gloves.
Pour all the ingredients in a glass measuring container or a bowl.
Stir or whisk until the ingredients are well blended.
Pour the mixture into a dispenser bottle (or a bottle from liquid soap, sanitised). Ideally, let your hand gel sit for 72 hours so the sanitiser can kill any bacteria that has been introduced into the mix while preparing. Give the bottle a good shake every couple of days.