Do Hand Sanitisers Expire?

Date Posted:13 October 2021 

Hand sanitizers have become a staple during the pandemic, especially as a way to combat the spread of the COVID-19 virus. But how long do these products remain effective, and does their efficacy diminish after the expiration date? Let’s explore this topic further.

 

Yes, They Do Expire.

Most hand sanitizers have an expiration date printed on them, typically two years from the manufacturing date. After this period, the sanitizer might still be usable, but its effectiveness will likely decrease compared to a newer product.

The expiration date serves as a guideline for how long the product is expected to maintain its stability and effectiveness. However, factors such as storage conditions and the type of alcohol used can influence the actual shelf life.

Why Do Hand Sanitisers Expire?

Hand sanitizers are primarily categorized into two types: alcohol-based and non-alcohol-based. Alcohol-based sanitizers usually contain either ethanol or isopropyl alcohol as their primary active ingredient, while non-alcohol-based ones rely on antimicrobials like benzalkonium chloride.

Both types of sanitizers also include water and humectants like glycerol to keep the skin hydrated. Alcohol-based sanitizers are particularly vulnerable to evaporation since alcohol is volatile and can escape through the container's seal over time. This gradual loss of alcohol reduces the sanitizer's antibacterial properties.

Is Expired Hand Sanitiser Safe?

The safety and effectiveness of an expired hand sanitizer depend largely on how much alcohol remains in the product. If the alcohol concentration drops below 60%, the sanitizer may no longer be as effective against certain germs, though it could still work against others.

While expired hand sanitizers might not be as potent, they are generally still safe to use. However, relying on them for critical hygiene situations is not advisable.

Using Hand Sanitisers Effectively Against COVID-19

According to the Centers for Disease Control and Prevention (CDC), an alcohol-based hand sanitizer with at least 60% alcohol is recommended to kill the COVID-19 virus.

To use hand sanitizers effectively, follow these steps:

1. Inspect the bottle to confirm that the sanitizer hasn't passed its expiration date.
2. Apply a generous amount of sanitizer onto one palm.
3. Rub your hands together thoroughly, ensuring the sanitizer covers all surfaces of your hands and fingers.
4. Allow the sanitizer to dry naturally without rinsing it off.

Hand sanitizers should only be used externally. Ingesting them can lead to severe health issues, especially in children.

Handwashing vs Hand Sanitisers

The CDC recommends washing hands with soap and water whenever possible, as this method is more effective against a wide range of pathogens, including the COVID-19 virus. However, if soap and water aren’t available, alcohol-based hand sanitizers can serve as a temporary alternative to reduce the number of microbes on your hands.

Summary

Hand sanitizers, whether alcohol-based or non-alcohol-based, play a crucial role in maintaining hygiene, especially when soap and water aren’t accessible. Products with at least 60% alcohol are recommended by health authorities like the CDC for combating the COVID-19 virus.

Since alcohol is highly volatile, alcohol-based sanitizers tend to lose potency over time due to evaporation. To ensure optimal performance, choose a product with a shelf life of at least two years and consider replacing any expired sanitizers.

 

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