You can make effective hand sanitizer without aloe vera gel by using glycerin as your moisturizing agent instead. The World Health Organization’s official handrub formulas don’t include aloe vera at all. They rely on alcohol, a small amount of glycerin, and hydrogen peroxide to create a liquid sanitizer that kills germs effectively. You can also thicken the mixture into a gel using other ingredients if you prefer that consistency.
Why Aloe Vera Isn’t Necessary
Most DIY hand sanitizer recipes call for aloe vera gel because it thickens the mixture and adds moisture. But it’s not what kills germs. The germ-killing power comes entirely from alcohol, which needs to make up at least 60% of the final product to be effective. Aloe vera is just a carrier and skin soother, and several other ingredients do that job just as well.
Glycerin is the most common alternative. It’s a humectant, meaning it pulls moisture into your skin and helps prevent the drying and cracking that alcohol causes with repeated use. It’s inexpensive, widely available at pharmacies, and it’s the exact ingredient the WHO chose for their recommended formulas. Propylene glycol is another option that works at concentrations of 2 to 5% without reducing the sanitizer’s ability to kill pathogens.
The WHO Liquid Sanitizer Formula
The simplest aloe-free sanitizer follows the WHO’s published formulation. It produces a liquid (not a gel), but it’s proven effective and uses only four ingredients. Here’s what you need to make roughly one cup (250 ml):
- Ethanol (96% concentration): 208 ml
- Hydrogen peroxide (3% concentration): 10.4 ml
- Glycerin (98% concentration): 3.6 ml
- Distilled or boiled-then-cooled water: enough to reach 250 ml total
Combine the ethanol, hydrogen peroxide, and glycerin in a clean container, then add water to reach your target volume. Stir or gently shake to mix. The final product is 80% ethanol, 1.45% glycerin, and 0.125% hydrogen peroxide.
If you can’t find ethanol, the WHO offers a second version using isopropyl alcohol (rubbing alcohol) at 99.8% purity. For 250 ml, use about 188 ml of isopropyl alcohol instead of ethanol, with the same amounts of hydrogen peroxide, glycerin, and water. This produces a final concentration of 75% isopropyl alcohol.
What Each Ingredient Does
The alcohol is the active germ killer. Hydrogen peroxide isn’t there to disinfect your hands. It’s added in a tiny amount to kill any bacterial spores that might be lurking in the bottle or in the raw ingredients. Glycerin keeps your skin from drying out. Water brings everything to the correct concentration, because pure alcohol actually evaporates too quickly to kill germs effectively.
Turning It Into a Gel Without Aloe
The WHO formula is a thin liquid, which works fine but drips more than commercial gel sanitizers. If you want a thicker consistency, you have a few options, though each comes with trade-offs.
Xanthan gum is a common food thickener, but it doesn’t play well with high-alcohol solutions. Research shows xanthan gum starts to precipitate out of solution when alcohol concentration exceeds about 37.5% for ethanol. At concentrations above 75%, it forms brittle, fibrous clumps instead of a smooth gel. Since effective sanitizer needs at least 60% alcohol, xanthan gum is a poor choice here.
Carbomer 940 is the thickener used in most commercial gel sanitizers. It works well in high-alcohol formulations, typically at around 6% of the total volume. The catch is that carbomer needs to be neutralized with a base (like triethanolamine) to form a gel, which adds complexity. You’d need about 6 ml of carbomer and a tiny amount of neutralizer per 100 ml of sanitizer. This is doable but requires more precise measuring and ingredients that aren’t always easy to find at a regular store.
For most people making sanitizer at home, the liquid version is the practical choice. Pour it into a small spray bottle or a squeeze bottle with a narrow opening to control how much comes out.
Getting the Alcohol Concentration Right
This is where most homemade sanitizers fail. The CDC is clear: hand sanitizer needs at least 60% alcohol to work. That means you cannot use standard 70% rubbing alcohol as your only ingredient and then dilute it heavily with other liquids, because you’ll drop below the effective threshold.
If you’re starting with 96% ethanol, the WHO formula dilutes it to 80%, which gives a comfortable margin above the 60% minimum. If you’re using 99.8% isopropyl alcohol, the formula brings it to 75%. Both are well within the effective range.
If all you can find is 70% isopropyl alcohol from the drugstore, you have very little room to add anything else. Every tablespoon of water, glycerin, or other liquid you add pushes the alcohol percentage lower. With 70% rubbing alcohol, limit your additions to no more than about 10% of the total volume. For a cup of 70% rubbing alcohol, that means roughly two tablespoons of glycerin and nothing else.
Storage and Shelf Life
Homemade hand sanitizer doesn’t expire in the traditional sense, but its alcohol content gradually drops over time as alcohol evaporates. This happens faster when the container is only partially full (more air inside means more evaporation) or when it’s stored somewhere warm, like inside a car. A tightly sealed container kept at room temperature will maintain its effectiveness the longest.
Use glass or thick plastic containers. Thin, flexible plastic can allow alcohol to permeate through the walls over time. Label your container with the date you made it and the alcohol percentage. A reasonable guideline is to use homemade sanitizer within a few months and make smaller batches rather than stockpiling large quantities.
Tips for Better Skin Tolerance
Without aloe vera’s soothing properties, your hands may feel drier with repeated use. Glycerin helps, but you can improve skin tolerance further by adding a small amount of propylene glycol (about 2 to 5% of your total volume) or a few drops of vitamin E oil. These additions won’t interfere with the sanitizer’s germ-killing ability as long as you keep the total non-alcohol ingredients under 20% of the final product.
If your hands are already cracked or irritated, applying a separate moisturizer after the sanitizer dries is more effective than trying to pack moisturizing ingredients into the sanitizer itself. The alcohol needs direct contact with your skin to work, and heavy emollients can create a barrier that reduces its effectiveness.