Diptyque Electric Wall Diffuser The electric wall diffuser is an exceptional object. Sophisticated in both its design and technique, the wall diffuser uses contemporary, portable technology to diffuse nine iconic Diptyque scents. Activate with a simple touch anywhere on the vent to switch the device on and off. The scented cartridges can be kept up to 3 months after opening, provided that the packet is properly closed and stored after each use. The refill is interchangeable at any time, as th.