**The Benefit of an Aroma, Inhaling Essential Oils**Essential oils that are inhaled into the lungs offer both psychological and physical benefits. Not only does the aroma of the natural essential oil stimulate the brain to trigger a reaction, but when inhaled into the lungs, the natural constituents (naturally occurring chemicals) can supply therapeutic benefit. Diffusing eucalyptus essential oil to help ease congestion is a prominent example. Other benefits include stress and headache relief, sleep improvement, mood boosting, hormones’ regulation, muscles’ relaxation, immune system’s stimulation, blood circulation, skin diseases’ healing etc.**The Benefit of Physical Application**Essential oils that are applied to the skin can be absorbed into the bloodstream. The constituents of essential oils can aid in health, beauty and hygiene conditions. Since essential oils are so powerful and concentrated, they should never be applied to the skin in their undiluted form. To apply essential oils to the skin, essential oils are typically diluted into a carrier such as cold-pressed vegetable oil, also known as a carrier oil. Common carrier oils include sweet almond oil, apricot kernel oil, and grapeseed oil.**Other Benefits**In addition to therapeutic benefit at the emotional and physical level, essential oils are helpful in other applications. Some oils act as a natural insect repellent and pesticide. You may recall using citronella candles during the summer to keep mosquitoes away. Citronella essential oil is the ingredient in the candles that is responsible for repelling the mosquitoes.