Abstract: The device is used to generate foam and is installed between a conventional shower head and the corresponding water pipe. The device features a foam generator that uses air, water and a foaming liquid to generate foam inside a chamber located in the body of the device. A method for generating foam is also disclosed. In the device, the chamber is located under the container that provides the foaming liquid and is provided with a jet that receives deviated water and atomizes the water therein. Air is drawn inside the chamber. Foam is generated as the air, water and foaming liquid are mixed inside the chamber. The foam then flows out of the device through a spout. Operation of the device is achieved through the use of a rotative manual selector, by which the user selects various modes, including a soaping mode where only foam is generated. The device can allow a water economy of up to 75% of the water that could have been used otherwise and thus prevents natural resources from being wasted.