Opening the reed diffuser is easy. You just need to unscrew the cap, then pull out the plastic plug underneath the gold cap. You can use needle nose pliers to lift the plug. You can also use a cork screw: turn the corkscrew into the center of the plastic plug, hold the bottle firmly, and pull straight out without letting the cork screw twist. For detailed instructions, you can watch our Youtube video, where we opened it up with a butter knife (because sometimes that is all you have around): Getting Started with Oojra Essential Oil Reed Diffusers: An Unboxing
You can also visit this page for an infographic on how to remove the plastic stopper: 8 Easy Steps to Start Using Your Essential Oil Reed Diffusers