Remove lid and plastic stopper. Screw the lid back on. Tip bottle over for 2-3 Seconds to allow the fragrance to soak into the lid, the longer you leave it the stronger your fragrance will be. Please DO NOT leave upside down for any length of time, as this will cause the oil to leak. The wood will absorb the fragrance and diffuse into the air, providing a long lasting beautiful aroma. Once empty, simply unscrew the lid of your diffuser bottle and refill using the dropper bottle and that’s it. Please remember to screw the lid of your diffuser back on tightly to avoid spillage. Some people do like to shake their diffusers quite often, (the more liquid that seeps through the wooden cap, the stronger the fragrance). This will affect how long the diffuser lasts but on average, they seem to last approximately 3 months.