Liquid versus Foam: Which Hand Soap is More Effective?
April 7, 2017 | Aging Services Risk Management
Foam soap is less effective than liquid soap when it comes to reducing microbial burden on hands, according to an article in the February 2017 issue of the American Journal of Infection Control. Foam soaps are aerosolized liquid soaps dispensed through a special pump mechanism. Because foam soap is mixed with air, the authors said, it is thought to be more cost effective than liquid soap. The authors randomly assigned 10 healthy subjects to wash their hands for six seconds with either a foam or liquid version of the same soap and then analyzed swabs from the subjects' hands to see how much bacteria was present.