How Do Soap Remove Grease and Oil?
It is common to use the soap to wash the hands to get rid of the oiliness from the hands. In the Saponifacation chemical process, due to the hydrolysis of the potassium or sodium the citric acids are formed. Both the oiliness and the oil cannot be removed only with the plain water and also cannot be diluted in the water. But the soap acts as an emulsifier and makes these two to combine together. This means, by decreasing the hardness of the water, the soap will be mixed with the oil or the oiliness and finally the dirt that is sticked to the hands will be removed.