3 Ways to Make Gel Alcohol Hand Sanitizer - wikiHow- when to add carbopol to aloe vera gel sanitizer ,Add your chosen oils to your sanitizer. Measure out 2/3 cup of isopropyl alcohol and 1/3 cup of plain aloe vera gel and dump both of them together into the bowl. Add ten drops of your chosen essential oil(s). Do not exceed 10 drops! Use your spatula (or spoon) to stir vigorously until all of the ingredients are fully mixed together.How to Make Hand Sanitizer: A Step-by-Step Guidealoe vera gel an essential oil, such as tea tree oil or lavender oil , or you can use lemon juice instead The key to making an effective, germ-busting hand sanitizer is to stick to a 2:1 ...