diptyque 34 Boulevard Saint Germain Diffuser 75 ml Refill refills the hourglass-shaped room diffuser that radiates the Maison's classic fragrances, paying homage to them with around forty raw materials. Simply turn this unique object upside down and with a simple movement impregnate the wick located in the central part of the two glass sections, then place it on a table to ensure perfect air circulation. The perfume distils drop by drop for around twenty minutes, in a relaxing hypnotic rhythm. Without using heat or electricity, the fragrance maintains its characteristics intact and spreads immediately, to enchant a room of up to 20 m². If turned upside down four times a day, it lasts around 10 weeks and can be recharged twice.