The device for evaporating volatile substances comprises a container (1) for a liquid that contains volatile substances and means (2) for evaporating the volatile substances. Said device is characterised in that said means for evaporating the volatile substances comprise two semipermeable membranes (2).The device allows the optimisation of the evaporation of the volatile substances present in the liquid, doubling the evaporation surface thereof compared to conventional devices, and it increases the users perception of the amount of liquid evaporated.
