Like a nail popping a tire, the water-repelling end of the soap molecule, a hydrophobic tail that can bond with oil and fats, stabs COVID-19 and leaves the virus a deflated and broken sack of RNA cells.
And while alcohol can also break an oily membrane, washing with soap has the added benefit of physically removing even tougher to break viruses and bacteria from the skin.
This is thanks to the dual nature of soap molecules. As the hydrophilic, or water-loving, heads reach out to bond with the water, the tails turn inwards to protect themselves from the water and by doing so, scoop up anything they catch in tiny soap bubble cages called micelles.
Scrubbing all parts of your hands and wrists vigorously, with a sudsy lather, is key to locking these invading particles away for good - and washing them down the drain.
And whether the water is cold or warm doesn’t matter, so long as it’s soapy.
Ref: https://en.unesco.org/news/how-soap-kills-covid-19-hands