The Scary Truth About Homemade Hand Sanitiser

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As the number of confirmed cases of COVID-19 continues to grow, so does the demand for supplies to fight the novel coronavirus. In the early days of the global pandemic, hand sanitiser was one of the first things to fly off shelves — and it's still almost impossible to find online or in stores. This unexpected demand has left many people to attempt their own DIY versions using recipes circulating on social media.

While it certainly seems like an easy concoction to make, it's left many wondering if homemade sanitiser is actually safe — especially after a child in New Jersey was allegedly burned — let alone effective. To find out, we tapped the experts for advice.

"Making your own sanitiser can be complex and the recipes vary," says Hadley King, MD, a Manhattan-based dermatologist. "The CDC recommends that a hand sanitiser be made up of at least 60% ethanol or 70% isopropanol alcohol."

Corey L Hartman, MD, a dermatologist at Skin Wellness Center in Birmingham and Chelsea, Alabama, says that while making sanitiser at home is possible, it's important to use caution to ensure efficacy and prevent injury. "As long as the alcohol content is at least 60%, then it’s effective at properly cleansing the hands," he says. "As the alcohol percentage increases, so do the chances of developing irritation from using the product."

"It can be confusing for many consumers, and if they create mixtures that are not effective, it can lead to a false sense of security."

Dr Hadley King
However, not fully understanding how these percentages will be represented in the final mixture can skew the efficacy, which means it's easy to waste precious alcohol (which is also in demand) that you could have saved for wiping down your phone, computer, or keys.
"The finished sanitiser product must be at a 60% alcohol content after you mix all of the ingredients," says Zenovia Gabriel, MD, FAAD, a dermatologist in Newport Beach, California. "Therefore, if you use 60% alcohol, you cannot mix it with anything else, or else you will be diluting it below the recommended level that is deemed effective."
This is why experts say that, as simple as it may seem, making your own hand sanitiser isn't as foolproof as throwing alcohol and aloe into a bottle. "You have to do the calculations accurately to determine how to mix the ingredients, which may include alcohol, aloe vera, essential oils, and hydrogen peroxide," Dr King says. "And you should also minimise contamination by using sterile utensils and containers."
The nuances of making safe sanitiser at home is why Dr King suggests washing your hands for at least 20 seconds using soap and warm water, which is more effective anyway. "It can be confusing for many consumers, and if they create mixtures that are not effective, it can lead to a false sense of security," she says.
What's more, dermatitis and sensitivity — including dry, cracked, red, scaly, and inflamed skin — can also come into play, especially if your alcohol percentage is too high or you're not regularly using moisturiser.

"If the skin on your hands is getting dry and irritated, that doesn't mean stop washing and sanitizing," Dr King says. Instead, experts say focus on replenishing lost moisture with hydrating products and avoiding sanitisers with essential oils and fragrances if your skin is sensitive, both of which are common skin irritants.
If you are experiencing dryness caused by excessive hand washing and sanitizer use, experts recommend looking for thick moisturisers that create a protective barrier on the skin, like fatty acids and ceramides. Dr King recommends EltaMD So Silky Hand Creme, Dr Campbell suggests using Avene Cicalfate Restorative Skin Cream, and Dr Hartman swears by Aquaphor. "Apply it to hands and cover them with cotton gloves overnight to help keep your skin barrier intact," he says about the latter option.
While sanitiser is helpful in keeping your hands clean on the go, Dr Gabriel says that washing with plain soap and water is one of the safest and most effective ways to disinfect your skin several times per day. "The skin itself is a phenomenal barrier to the outside world, but the skin must be healthy," she explains. "If your skin is cracked and dry, it becomes more prone to infection because the barrier is compromised." So keep your soap, water, and moisturiser close — and stick to FDA-approved sanitiser unless you really know what you're doing.
The World Health Organization says you can protect yourself by washing your hands, covering your mouth when sneezing or coughing (ideally with a tissue), avoid touching your eyes, nose and mouth and don't get too close to people who are coughing, sneezing or with a fever.

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