The bubbler is a device which is installed at the outlet end of the water nozzle and mixes (increases) air when it comes out of the water. The feeling of hand washing is more comfortable, but it can be inferred that "it can fully mix the flowing water and air, reduce the water pressure, and improve the water washing force, so as to effectively reduce the water consumption". 

But it's really irresponsible, and it's extremely irresponsible (I hope the person who put forward this view is not clearly stated, or is simply misunderstood by us). From the point of view of the principle of fluid continuity, the bubbler essentially reduces the injection speed, impact force and impulse of tap water (it also admits that the outlet water pressure is reduced). The essence of decontamination and washing is power, and water is only the material carrier of transferring power. The only way to improve the utilization efficiency of water is to strengthen and improve the impulse and particle impact of water, while the bubbler can only slow down the flow rate of water and reduce the large impulse and particle impact of tap water. Therefore, it is impossible to save water after installing the bubbler (whether you want to use more water, you can experiment and compare, and draw your own conclusion). 2. The faucet frother is to change the "pipe flow" of water into "line flow" at the outlet of the faucet, and then change the "line flow" into "jet flow" through the pressure of air, and then beat the water evenly through "water separation" to make the water soft. Through the pressure of air, the water has power, and reduces the flow of water without affecting the use. It can reduce water charge, energy consumption and sewage discharge. Water saving nozzle can effectively prevent the accumulation of dirt, eliminate the possibility of bacteria breeding, and effectively maintain human health while saving water and energy, protecting the environment.