Wet your hands with clean, running water (warm or cold), turn off the tap, and apply soap. Lather your hands by rubbing them together with the soap. Be sure to lather the backs of your hands, between your fingers, and under your nails. Scrub your hands for at least 20 seconds.
https://www.cdc.gov/features/handwashing/index.html
Work the soap into a lather and use the soap to scrub both sides of your hands, in between your fingers, around and under your fingernails, and around your wrists. You can use a liquid hand soap, a soap bar, or powdered soap. The soap does not have to be antibacterial. Keep washing your hands for 20 seconds or more.
http://www.wikihow.com/Wash-Your-Hands
Scrub your hands and forearms, covering the entire skin area. Rinse and repeat, up to several times. Total scrub time should be about 2 minutes. That is long enough to do an effective job, but not so long as to damage the skin. In the olden days, surgeons used to do a 10 minute scrub, but very few do this anymore.
http://www.brooksidepress.org/Products/Military_OBGYN/Procedures/Scrubbing/ScrubbingyourHands.htm
I've seen people who use hand sanitizer when they shake hands with people, which seems paranoid to me. People who use hand sanitizer are ignorant of the basic science behind bacteria, antibiotics, and alcohol. When I did construction work, there were times I went right from working outside in the dirt, to taking a leak (and didn't have access to a sink/soap), to eating lunch, and I didn't get sick.
https://www.quora.com/How-long-do-hand-soap-and-sanitizers-take-to-actually-kill-bacteria
Work the soap into a lather and use the soap to scrub both sides of your hands, in between your fingers, around and under your fingernails, and around your wrists. You can use a liquid hand soap, a soap bar, or powdered soap. The soap does not have to be antibacterial. 4. Keep washing your hands for 20 seconds or more.
http://www.wikihow.com/Wash-Your-Hands
Wet your hands with running water and apply soap. Rub your hands together to make a lather. Scrub well for at least 20 seconds. Pay special attention to your wrists, the backs of your hands, between your fingers, and under your fingernails. Rinse your hands well under running water. Use a clean towel to dry your hands, or air-dry your hands.
http://www.webmd.com/cold-and-flu/tc/hand-washing-topic-overview
Washing hands with soap and water is the best way to get rid of germs in most situations. If soap and water are not available, use an alcohol-based hand sanitizer [423 KB] that contains at least 60% alcohol. You can tell if the sanitizer contains at least 60% alcohol by looking at the product label.
https://www.cdc.gov/features/handwashing/index.html
How long do hand soap and sanitizers take to actually kill bacteria? Does washing your hands in 3 seconds actually give the soap a chance to work or do you need to build a long lasting lather to actually kill off the bacteria? Save time & train better with meal plans tailored to your fitness goals.
https://www.quora.com/How-long-do-hand-soap-and-sanitizers-take-to-actually-kill-bacteria
Follow the five steps below to wash your hands the right way every time. 1  Wet your hands with clean, running water (warm or cold), turn off the tap, and apply soap. 2  Lather your hands by rubbing them together with the soap. 3  Scrub your hands for at least 20 seconds.  Rinse your hands well under clean, running water.
https://www.cdc.gov/features/handwashing/index.html
Wet your hands and forearms up to the elbow. Once you begin scrubbing, keep your hands above your elbows, so the water will drip away from your hands and down to your elbows. Scrub brushes usually have two sides (foam side and bristle side). Use the bristles for the palms of the hands and underneath the nails. Use the foam side for everything else.
http://www.brooksidepress.org/Products/Military_OBGYN/Procedures/Scrubbing/ScrubbingyourHands.htm
how long should you scrub your hands?
You should scrub your hands for 20 seconds.