What happens if I use expired hand sanitizer? - Quora- 2018 dettol senatizer manufacter ,Expired hand sanitizer will work, but it will only kill old germs. The germs must have been born before the expiration date on the hand sanitizer. Really, many sanitizers have dates that are more about production dates than useful life. Alcohol ba...How to Choose Safe Hand Sanitizer + 18 Brands to AvoidBut because many of us are required to provide hand sanitizer at school, we have to figure out what brands we can trust, which products are truly safe and which ones to avoid. With few exceptions, hand sanitizers across the board consist of three active ingredients: alcohol, benzalkonium chloride and benzethonium chloride. Of the three, our ...