Salons and backstage areas at fashion events can be active environments. As air is drawn in through the filter by the powerful Dyson digital motor V9, contaminants such as hairspray, dust and silicon from leave-in conditioners are also pulled in. To protect the technology inside the Dyson Supersonic™ hair dryer Professional, we’ve engineered a two part filter cage. The inner filter mesh is ‘depth loading’ and is responsible for removing contaminants in the air. The outer filter cage is to protect the mesh from being damaged and at the same time give us the velocity that we need to increase the blocking cycle. There is also an inner grille (part of the product) which acts as a second layer of protection for the motor. Interestingly, during our testing, we identified there were eight different salon environments around the world. We have engineered our filter to be able to cope with this.