The FDA is finally banning antibacterial soap. Companies have about a year to phase out triclosan and triclocarban, the two toxic chemicals people have been putting on their bodies and in their mouths all these years.

Evidence suggests that the chemicals used in antibacterial soaps can alter hormone cycles and cause muscle weakness, NPR reports. Triclosan also kills good bacteria and could help create germs that are resistant to antibiotics; the chemical has been known to contaminate streams and has been found in human milk and dolphin’s blood, according to Vitals.

While antibacterial soap is often marketed as being more effective than soap and water, experts say that it actually isn’t. Washing your hands with regular soap (if you do it the right way) is just fine.

Hospitals and the food industry can still use antibacterial soap, but otherwise, companies have until September 2017 to rid their products of the banned chemicals or remove those products from the market altogether.

Here’s how to wash your hands like a surgeon: