Using this oil therapy case is super easy. Just open the case and place your 10 ml essential oil bottles, 50 ml carrier oil bottle or 30 ml essential oil bottle, and the beaker inside. Make sure to arrange them neatly to save space. When it comes to safety, avoid dropping the case as it may cause the bottles to break. To keep it in good condition, clean the case regularly with a soft, dry cloth. Don't use harsh chemicals as they might damage the case. Also, store the case in a cool, dry place when not in use.