HOW TO USE IT In a desire to reinforce its commitment to sustainability, KILIAN enhanced the design of the refill bottles: the glass is now transparent in order to make sure that it can be recycled.Start refilling the bottle by carefully removing the atomizer. Plug the refill bottle into the flacon and make sure to hold it vertically. The cutting-edge dispenser will stop transferring the perfume automatically once the container is full. This innovative new refill allows an easy spill-proof process for the 50ml fragrance bottle and the travel spray.