Dry Hands More Properly
With a low-cost evaporative hand dryer, it might take more than 30 seconds for the user to dry their hands properly. This is because of the way the dryer works. Air is heated and blown slowly over the skin as the hands are rubbed together. By spreading the moisture into a thin layer on the skin, it makes it evaporate away more quickly, but you are still reliant on changing the state of the water, and this slows down the process.