The Softsoap brand Antibacterial Hand Soap is clinically proven to kill harmful bacteria in a handwashing test vs. the following common harmful bacteria: s. aureus and e. coli. The special formula with moisturizers leaves the skin feeling soft and protected. Due to the special formula, Softsoap Antibacterial refill should only be used with Softsoap* Antibacterial pump and should not be combined with other liquid hand soaps.