Take your favorite oils, drop them into the tiny bottle, close lid, and open and tap the back of the bottle to get one drop on the go. This is handy for leaving in your car, leaving at work, or having in your purse when you need a quick peppermint, onguard, or oregano on the road. Refill by using a sharp pointed tool to poke out the plastic insert using the tool directly into the drop hole and pop out, refill, then reinsert. It comes with purse and refillable small bottles. All Sales Final.