Essential Essence aroma inhalers are a perfect way to use aromatherapy without exposing other people or animals to the vapours. They can be used anywhere, any time and are convenient to use whilst traveling. Each inhaler is supplied with a 100% pure essential oil blend that can be used to replenish the inhaler scent or be used in an electric or candle diffuser, as required. This soothing decongestant blend contains eucalyptus, tea tree,peppermint and lavender essential oils. It must be diluted with a suitable carrier oil prior to skin application.