No soap technically kills the most germs in the way disinfectants do, soap primarily works by removing germs rather than killing them, though antibacterial soaps contain added ingredients that can kill some bacteria. Regular soap and water is highly effective because soap molecules surround dirt and microbes and lift them from skin so they can be rinsed away, which is why handwashing is recommended by health authorities for preventing illness. Antibacterial soaps often contain ingredients like benzalkonium chloride or previously triclosan, which can kill bacteria, but studies have shown that for general use they are not significantly more effective than regular soap for preventing illness, and overuse may contribute to resistance. The most important factor is thorough washing for at least 20 seconds covering all surfaces of hands. For killing germs on surfaces, disinfectants are needed after cleaning with soap. If you want soap that claims to kill germs, look for products labeled antibacterial with EPA or FDA registration and follow label directions, but regular soap with proper technique remains highly effective and safe for everyday use.
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