INTRODUCTiON
WHAT SMELLS SO GOod?
The fresh scent of lemons, the soothing aroma of lavender, or the mystical fragrance of frankincense can conjure feelings of happiness, serenity, or clarity. Essential oil qualities stretch far beyond their beautiful scent and can invoke physiological changes in the both the mind and body. When inhaled, smell receptors in the nose send messages along the olfactory nerve to the part of the brain responsible for emotions and behavior. This part is also connected to other parts of the brain that control breathing, blood pressure, stress, memory, and hormones.1 When ingested or applied topically, essential oils are small enough to penetrate the skin or other tissues within twenty minutes2 and even cross the blood-brain barrier. The composition of each oil is unique to its source and can even vary widely within genera. Most oils are made up primarily of terpenes, which impart the particular aroma of the oil and give the plant its antimicrobial defenses. These properties, along with their antioxidant, anti-inflammatory, and pain-relieving abilities, are delivered to the individual using the oil. Essential oils do not contain vitamins, minerals, hormones, or nutrients.
These oils are volatile liquids produced from steam or hydrodistillation of plant leaves, stems, bark, flowers, seeds, or roots. The only oils produced differently are citrus oils, which are cold pressed from the citrus peels. It takes a lot of plant material to produce a small amount of oil and is the reason why pure essential oils can be quite expensive. Four thousand pounds of roses are needed to get one pound of oil; other plants don’t need quite such high amounts of raw material. A pound of lavender oil can be produced from 220 pounds of lavender flowers. Essential oils are very concentrated, so a little goes a long way.
From MummIfIcatIOn
To Aromatherapy,
Essential Oil Use
Throughout HIstory.
Long ago, our ancestors burned locally grown aromatic woods and herbs to smoke out evil spirits thought to be responsible for causing illness. As the years went on and man became more intellectually adventurous and innovative, civilizations began to use aromatic plants in healing, spiritual practice, and beauty treatments. While credit is commonly given to the Egyptians for beginning this tradition as long ago as five thousand years, similar uses of plant essences in both India and China were found around the same time.
The Egyptians burned incense from aromatic plants in religious ceremonies to help carry messages to their deities. It was the temple priests who prepared plant oils for religious and medicinal purposes, and they were so highly prized and expensive that some cost as much as precious metals and gems. One of the most famous uses of aromatic plant oils by the Egyptians was in the mummification process. Embalmers used cinnamon, myrrh, frankincense, juniper berry, and cedarwood to prepare the bodies for burial and the afterlife. During their earthly lives, oil use was widespread. Egyptians anointed their bodies with oils after bathing to soothe, condition, and perfume the skin. Cleopatra, known for her charm and allure, is said to have used them extensively in her beauty treatments. So enamored were they with the enticing scents the oils imparted that they became expert perfumers and were renowned for the quality and diversity of their perfumes. After his victorious defeat of Egypt, Julius Caesar returned to Rome with the highly prized Egyptian perfumes and tossed full bottles into the Roman crowds as a celebration.
The Yellow Emperor of China wrote a book on internal medicine over 4500 years ago that includes the uses of some aromatic oils. It is still in use as a reference today. A thousand years later, India followed suit and published their most sacred texts, the Vedas; among other things, this book documents over seven hundred substances, including sandalwood, myrrh, cinnamon, and ginger. They were used in religious ceremonies and the healing arts.
Trade with the Egyptians brought aromatic oils to the European continent. The Greek physician Hippocrates, known as the “Father of Medicine,” studied and documented the effects of over three hundred plants and so strongly believed in their therapeutic value that he chose them to treat wounded soldiers and to combat the plague in Athens. The Romans were heavily influenced by the Greeks and adopted the use of plant oils not only in healthcare but for everyday use. They used them extravagantly for frequent massages and sprinkled them in warm baths and over their beds, clothes, and hair. The Greek physician Pedanius Dioscorides chose to administer to Roman soldiers during the first century so he could march with Roman armies and study the therapeutic effects of plants he discovered along the way. His writings were published in an impressive five-volume work with over six hundred plant-based remedies using peppermint, thyme, myrrh, lavender, ginger, dill, and juniper, among many others. Carrying on the work of these influential physicians was Claudius Galen, who successfully treated Roman gladiators with herbs and wrote extensively about the medicinal uses of plants.
Up until about a thousand years ago, oils from plants were likely extracted by solvents or pressing. It was the Persians who were the first to actually distill oils. It is this process that is still used today.
Crusaders returning home from the Holy Wars brought new perfumes, aromatics, rose water, and healing remedies to Western Europe. People decorated their homes with herbs and washed their hands in rose water, if they could afford it. After Europe plunged into the Dark Ages, much of the progress on plant oils was halted and the knowledge discarded. Medicine became governed by the Catholic Church, who decreed bathing was sinful and that all disease was a punishment from God. Plant oils were still used for their pleasing aromas and to mask the scent of filth and decay.
Despite the threat of persecution, some monks secretly tended to the sick and dying in their monasteries using herbal medicine. If they or others were found using herbs and oils, they were accused of practicing witchcraft and were either outcast or executed. By the Renaissance period, however, the use of essential oils was once again on the rise, and by the 1800s, most of Western European physicians commonly prescribed oils to combat illness. René-Maurice Gattefossé, a French chemist, coined the term aromathérapie to describe the use of essential oils in healing treatments, and he later wrote a book by the same name. By happenstance, Gattefossé was unfortunate enough to find out firsthand the beneficial effects of lavender in healing. He burned his hands in an accidental lab explosion. Thinking quickly, he coated his hands in lavender oil. His pain and swelling were immediately reduced, and the burned skin tissue healed quickly and without scarring.
A colleague of Gattefossé named Jean Valnet used thyme, clove, lemon, and chamomile essential oils with great success in treating wounded soldiers during the Indochina War. He wrote a book in 1964 that was later translated into The Practice of Aromatherapy.
Today, many doctors in Europe commonly prescribe essential oils for specific health conditions, and in North America, more and more people are complementing conventional treatments with visits to naturopaths, aromatherapists, homeopaths, chiropractors, and acupuncturists who use essential oils as part of their practices. Researchers continue the work of earlier investigators by carrying out scientifically designed research protocols in an attempt to determine the chemical constituents and physiological activity by which these remarkable oils help us heal, inside and out.
What’s The Best Way To Store Essential Oils?
Essential oils are volatile, meaning they evaporate if left exposed to the air. Always make sure the cap is tightly screwed on the bottle to prevent the oil from disappearing before you’ve had a chance to use it all. Prolonged heat exposure or repeated heating and cooling also speeds up the process of evaporation. Keep your oils away from sunlight and store in a dark place.
Never put them near candles, fires, or other flames. These oils are flammable. Essential oils are not meant to be heated by candles; this is a job for diluted scents in a carrier oil. The bottles essential oils are stored in should be darkly colored and made of glass. Pure essential oils can eat into plastic, so never decant these oils into plastic bottles. Today, glass bottles can most often be found in dark amber, brown, green, and blue. Amber and brown are the most effective in keeping damaging ultraviolet rays of the sun out to prevent free radical formation. Green and blue are less effective.3 Free radicals degrade the quality of the oil, changing its chemical composition and making it less aromatic and therapeutically effective. Oxygenation does this as well.
When oils are exposed to oxygen, it reacts with some of the chemicals in the oil. All oils are prone to oxidation, but some are much more susceptible and are better stored in a fridge. Citrus essential oils contain large amounts of limonene, which oxidizes easily. Blue oils like yarrow, blue tansy, and blue chamomile are another group of oils that oxidize more easily. You’ll know these oils have lost their effectiveness if they turn from a blue to a green color. Try to use these oils within nine months to a year of purchase. Tea tree, fir, and pine oils also have a relatively short lifespan and should not be stored for more than eighteen months. Most other essential oils should remain fresh for up to two years. A few, like sandalwood and patchouli, get even better with age and are known to be stable for six to ten years or more.
HOW DO i USE ESSENTIAL OiLS?
Each essential oil is made up of complex biochemical compounds that impart specific benefits to the body. They are very concentrated, so it is important to remember that a little goes a long way. Follow the label recommendations for appropriate dosing to avoid toxicity. When it comes to essential oils, remember: less is more. Obtaining the benefits of essential oils can be achieved through ingesting the oils, applying them topically, or inhaling them.
Replacing spices and herbs with essential oils or adding a few drops to water, smoothies, or yogurt are a few ways to ingest oils. By this method, essential oils enter the blood via the gastrointestinal tract where they are readily transported to the organs of the body, including the brain, and act at the cellular level. There is controversy surrounding the safety of consuming oils due to their highly concentrated nature. Toxicity is a real concern. To be safe, consult a health professional beforehand or consider using fresh or dried herbs, spices, teas, or tinctures to get the benefit of the plant’s essence through this method.
Topical application to the skin is an effective and safe way to use essential oils. Apply to the forehead, soles of the feet, neck, chest, arms, or legs or add a few drops to a warm bath. Avoid direct application to the eyes and injured and inflamed skin. Essential oils are lipid soluble and will penetrate the skin to provide a localized benefit. Massage to the area will increase blood absorption and carry the oils throughout the body. Most essential oils should be diluted in a carrier oil like virgin coconut oil, jojoba oil, or sweet almond oil (if no nut allergies) before using on the skin. Typically, a 3 percent solution is recommended. This equates to three drops of essential oil to one teaspoon of carrier oil. Make sure to test the diluted oil on a small patch of skin before using over larger areas to make sure it doesn’t irritate the skin. A few oils like lavender, tea tree, helichrysum, and chamomile are thought to be safe to use undiluted. However, these can also cause sensitivity, so it is advisable to dilute them as well.
The safest method to use essential oils is through inhalation. Diffusers have become very popular over the last few years and work by dispersing the oils (in water) into the air with a cool mist. When inhaled, the oils are absorbed through the alveoli of the lungs as well as the smell receptors in the nose, which prompts the olfactory nerve to send messages to the part of the brain responsible for emotions and behavior. There is also a connection to other parts of the brain that control breathing, blood pressure, stress, memory, and hormones.4 Breathing in the enticing aroma of essential oils can have a powerful effect on the mind and body. It is not necessary to have a diffuser for this method. Adding a few drops of oil to a spray bottle with water is an excellent way to freshen clothes, furniture, or rooms.
ARE ESSENTIAL oIlS SAFE?
Unless an essential oil is being claimed as a treatment for a specific disease, they are not subject to regulation by the US Food and Drug Administration and are generally recognized as safe. This does not mean all oils are safe under all conditions. Each oil contains its own chemical makeup, and some of these chemicals can induce adverse skin reactions, resulting in irritation, phototoxicity, and sensitization. Bitter orange, lime, lemon, lemon verbena, grapefruit, angelica root, and bergamot can cause changes in skin pigmentation and a higher risk of sunburn when exposed to ultraviolet rays. When used, stay out of the sun and tanning beds for twenty-four hours. Other oils are known dermal irritants and can cause skin redness and pain. Make sure to dilute such oils in a carrier before use and never use on inflamed or injured skin.
Exposure to some essential oils can cause allergic reactions. In these cases, the first application often results in only a slight reaction. Subsequent use, however, can induce a severe inflammatory reaction producing swollen, red, and sometimes painful skin. Because everyone reacts differently, predicting which oils will be dermal sensitizers can be difficult, but a few known ones to use with caution are aniseed, sweet basil, holy basil, West Indian basil, black pepper, Virginia cedarwood, citronella, lemongrass, Peru balsam, oregano, pine, summer and winter savory, spruce, tea tree, thyme, turmeric, and ylang-ylang.
Some contraindications with blood-thinning medications and cinnamon leaf and sweet birch essential oils exist. Such oils interact with heart medications and cause the blood to become too thin, leading to internal bleeding. Those taking several medications need to be wary of sweet birch, cinnamon leaf, dill seed, sweet fennel, myrtle, nutmeg tarragon, lemon balm, winter savory, and summer savory. Silver fir and pine should be avoided in people with respiratory problems; juniper berry in those with kidney conditions; sage, thyme, rosemary, and hyssop in people with high blood pressure; sage in those suffering from seizures; and valerian, if taking antidepressants.
When using oils on babies and toddlers, use sparingly. All that is needed is 1 to 3 drops in 2 tablespoons of carrier oil. The younger the infant, the more diluted the essential oil should be. In children three years of age and older, dilute 5 to 8 drops of essential oil in 2 tablespoons of carrier oil. Be careful of the oils chosen. Some should never be used for children. Peppermint contains menthol, which can stop breathing and cause jaundice in some babies.5 Pregnant women may want to avoid the use of oils during the first few months of pregnancy. The chemical components and their metabolites can cross into the placenta and be delivered to the fetus. Depending on the concentration of the compounds and sensitivity of the fetus, a devastating toxic effect may result. That being said, there are no recorded cases of fetal developmental complications from the topical or inhaled use of essential oils under recommended dosages. During the later stages of pregnancy, these oils can be very beneficial to ease discomfort. Some oils should not be used at any time during pregnancy because they can affect hormones, can bring on contractions, or contain chemicals that are neurotoxic or teratogenic.
Always know the potential effects of each oil before using them and begin with small exposure times and concentrations to determine any sensitivities. When used properly, essential oils can be tremendously helpful.