Essential oils are one of the oldest and most important sources of natural and synthetic fragrances in our lives.
They have a strong connection with many of our health issues and are used to treat various skin disorders, including eczema and psoriasis.
But now they are also being used in the fight against climate change, which is affecting the health of many species of birds and mammals.
What you should know Essential oils come in many forms, including plant-derived compounds and natural ones that have not been chemically altered.
Natural essential oils contain only one or a few essential oils and do not contain synthetic fragrances or botanical extracts.
Natural and synthetic oils can contain the same chemical compounds, but they have different effects.
They may help relieve pain, relieve inflammation, and soothe aching muscles.
And they can help the body recover from trauma, such as surgery.
Natural oils can also contain the chemicals in perfumes, creams, soaps and hair care products.
They are also used as an alternative to medicines that contain synthetic chemicals and other harmful ingredients.
Essential oils can be produced from plants that grow naturally, including many plants found in Asia, North America, Europe and the Middle East.
But in recent years, they have been being used as a way of treating illnesses in humans, and as a source of medicinal ingredients for cosmetic products.
This article originally appeared in New Scientist magazine.