Do not run in the dishwasher. The Insulated DYLN Bottle is not designed to be dishwasher safe (Bottle, Diffuser and Wide-mouth Cap). Dishwashers can reach high enough temperatures that it may impact the scratch-resistant paint of the exterior and compromise the insulation benefit. Instead, we recommend hand washing your Bottle and Wide-mouth Cap with organic plant-based soap. We recommend simply running the Diffuser through warm water and let completely air dry.