Sofia Lagerkvist, Charlotte von der Lancken, Anna Lindgren and Katja Sävström have designed the disappearing-pattern tiles. The tiles are painted with patterns that are in thermo-chromic acid ink, having the capability to react to heat. The fading away of patterns reflect the spray and intensity of the water. The longer the shower will last, lesser decoration will last on the tiles. The disappearing act done by the design also reminds one of the energy use over the period of shower taking time. So, these tiles will look good, but at the same time, these will also make you feel guilty for the amount of energy and water wasted.