The New York Times published an article last week stating that scientists in Scotland have confirmed that the handwashing technique recommended by the World Health Organisation is the most effective when it comes to blasting bacteria (they pitted it against the Centre for Disease Control technique, and the WHO one came out on top).
And here it is written out step by step.
Step One: Rub palms together.
Step Two: Rub each palm front to back over the back of the other hand, interlacing fingers.
Step Three: Twist palms with fingers interlaced, and rub between fingers.
Step Four: Interlock your fingers, (thumbs should be on opposite sides), and twist again, this time, backs of fingers against palms.
Step Five: Clasp your left thumb in your right hand and move thumb in circular motion — then switch thumbs.
Step Six: Press your right fingers together and rub them in a circular motion on your left palm, then switch.
Source : heraldsun.com.au