Aromatherapy Chrome Twist Pen w/ Purple and White Swirl. Easy to add your favorite essential oils – just add a few drops to the included cotton wick to absorb the oil, unscrew the top of the kit and add the wick inside. The machined holes on the pen end easily ventilate the aroma. Just twist off the end cap to easily change oils. Each kit includes a smooth writing Parker style refill, 5 wicks and an empty 2ml aromatherapy sample jar. Note; essential oils are not included but are widely available.