Soap helps remove germs from our hands primarily through its chemical structure and interaction with oils and fats. Most germs, including bacteria and viruses, are found on our hands because of contact with contaminated surfaces or bodily fluids. Many of these pathogens cling to the natural oils on our skin, making them difficult to wash off with water alone.

Soap molecules have a unique structure: they have a hydrophilic (water-attracting) head and a hydrophobic (water-repelling) tail. The hydrophobic tail is attracted to oil and grease, while the hydrophilic head is attracted to water. When soap is applied with water and rubbed onto the skin, the hydrophobic tails latch onto the oily particles on the skin (where germs are trapped), and the hydrophilic heads stay in the water.

Through this action, soap molecules surround the oil and germ particles and form micelles-tiny spherical structures that trap the oils and germs inside. When we rinse our hands with water, these micelles are washed away, effectively removing the germs from the skin.

Soap is especially effective against viruses like the coronavirus, which have an outer lipid (fat) membrane. The soap molecules break apart this lipid layer, causing the virus to disintegrate and become inactive.

Proper handwashing-scrubbing all parts of the hands for at least 20 seconds-is essential for the soap to work effectively. Rubbing helps lift dirt, grease, and germs from the skin’s surface.

Soap removes germs by breaking down the oils that trap them and forming micelles that can be rinsed away. This makes regular handwashing with soap one of the most effective ways to prevent the spread of infections.