Pure essential oils have been used since ancient times as natural medicines. As natural products, they are dependent on climate and their composition varies according to soil conditions, sun exposure, harvest time, production methods, and storage conditions. Pure essential oils have been historically used to treat diseases of the nervous system, and cancer, although research is quite early and not much is known for certain about their role in serious medical conditions. Essential oils are also used to enhance skin penetration. Organic essential oils are made from plants grown organically, without pesticides. Many therapists prefer using organic essential oils for their clients.

A list aromatherapy essential oil - more to come
Coriander essential oil
Eucalyptus - Cineole is a chief constituent of eucalyptus oil and constitutes almost 80% of this essential oil.
Eugenol is often obtained from clover oil.
Fennel is quite aromatic
Lavender essential oil
Lemongrass essential oil
Oregano essential oil
Sage essential oil

Pure essential oil
Unlike fatty oils, pure essential oils are volatile, highly concentrated, substances extracted from flowers, leaves, stems, roots, seeds, bark, resin or fruit rinds. The amount of found in these plants can be anywhere from 0.01 percent to 10 percent of the total. These pure essential oils have several hundred natural chemicals. Do not substitute pure essential oils with synthetics. Only pure essential oils contain a full spectrum of compounds that cheap imitations simply cannot duplicate.

Essential oil online
You can find a number of companies selling essential oils online.

Lavender essential oil
Inhaling lavender or rosemary oils did not change pain tolerance or hormonal and nervous system responses to pain among 26 adults who sat through three uncomfortable situations -- such as having heat applied to the forearm or a blood pressure cuff tightened around the arm. But when participants were asked to rate their pain afterward, the lavender aromatherapy did seem to tone down the recollected experience. Men recalled the pain as less intense when they had inhaled the lavender oil, while women described it as less "unpleasant." Why the therapy affected only participants' recollection of pain is unclear, but it may be related to the effect of aroma on emotion, according to study author Dr. Roger B. Fillingim of the University of Florida College of Dentistry in Gainesville. There is evidence that emotion exerts "considerable influence" over pain recall -- with greater distress during a painful experience making a person more likely to remember the pain as severe. In particular, research on animals and humans has suggested that lavender oil has sedating effects. In one study, patients who received foot massages with lavender oil had lower heart rates than those who received lavender-free massages. To see whether aromatherapy could have a role in managing pain, Dr. Roger B. Fillingim had healthy men and women go through three moderately painful procedures after each of three aromatherapy sessions: one with lavender oil, one with rosemary oil, and one using a "control" treatment of distilled water. The oils did not alter pain tolerance, nor did they show physiological effects. The one exception was that lavender oil seemed to increase heat tolerance above that associated with rosemary oil, but not plain water. Lavender showed an advantage over water only when it came to participants' memory of their pain. Even if the oil does not change a person's actual experience, it may reduce "negative recollections" of a painful procedure. And that might keep people from skipping trips to the doctor or dentist. Psychosomatic Medicine, 2004.

Essential Oils and skin care
Suppression of neutrophil accumulation in mice by cutaneous application of geranium essential oil.
J Inflammatory. 2005.
The purpose of this study is to assess the effects of cutaneous application of essential oils on the accumulation of neutrophils in inflammatory sites in skin of mice.  Inflammation with accumulation of inflammatory cells was induced by injection of curdlan, a (1-->3)-beta-D-glucan in skin or peritoneal cavity of mice. Essential oils were applied cutaneously to the mice immediately and 3 hr after intradermal injection of curdlan. The skin with inflammatory lesion was cut off 6 hr after injection of curdlan, and the homogenates were used for myeloperoxidase (MPO: a marker enzyme of neutrophil granule) assay. The MPO activity of the skin lesion induced by curdlan was suppressed dose-dependently by cutaneous application of geranium oil. Other oils such as lavender, eucalyptus and tea tree oils also suppressed the activity, but their activities seemed weaker than geranium. Juniper oil didn't suppress the activity Cutaneous application of essential oils, especially geranium oil, can suppress the inflammatory symptoms with neutrophil accumulation and edema.

Essential Oil toxicity, danger, risk, side effect
Essential oil poisoning: N-acetylcysteine for eugenol-induced hepatic failure and analysis of a national database.
Eur J Pediatr. 2005.
A 15-month-old boy developed hepatic failure after ingesting 10 ml of clove oil. After 24 h, the ALT level was in excess of 13,000 U/l, with blood urea and creatinine of 11.8 mmol and 134 micromol/l respectively. The hepatic impairment resolved after intravenous administration of N-acetylcysteine so that 6 h later, the ALT level was approximately 10,000 U/l. His liver synthetic function and clinical status improved over the next few days. Analysis of a national database revealed a 14-fold increase in home accidents related to aromatherapy from 1994-1999. Clove oil has important liver harming effects. Recent growth in aromatherapy sales has been accompanied by an unfortunate increase in accidental poisoning from these products. Clove oil warrants special attention. Ingesting as little as 10 ml causes liver damage which can be treated with N-acetylcysteine.

Essential oil to prevent infection
Edible coatings containing oils from oregano and other sources can destroy food-borne microbes, enhancing the safety and shelf life of fresh food. Essential oils of some plants act as food preservatives and are safe to eat. Investigators prepared apple-based films. They then tested the antimicrobial activity of essential oils of oregano, lemongrass, and cinnamon, by measuring their ability to destroy Escherichia coli O157:H7, a microbe that causes food poisoning. The oil of oregano was the most potent. At a concentration of 0.1 percent, oregano oil was effective after just 3 minutes when added to the film-forming solution. In contrast, 5-fold higher concentrations of lemongrass and cinnamon were required to achieve the same antibacterial activity. Journal of Agriculture and Food Chemistry, November 29, 2006.

Essential oils and Helicobacter pylori
Antimicrobial activity of essential oils against Helicobacter pylori.
Helicobacter. 2003.
Helicobacter pylori is an important pathogen responsible for gastroduodenal diseases in humans. Although the eradication of H. pylori using antibiotics often improves gastroduodenal diseases, resistance to the antibiotics is emerging. The antimicrobial effect of essential oils and the development of resistance to the essential oils were evaluated in vitro and in vivo. Thirteen essential oils used in this study completely inhibited the growth of H. pylori in vitro. Cymbopogon citratus (lemongrass) and Lippia citriodora (lemon verbena) were bactericidal against H. pylori. Resistance to lemongrass did not develop even after 10 sequential passages, whereas resistance to clarithromycin developed under the same conditions. In in vivo studies, the density of H. pylori in the stomach of mice treated with lemongrass was significantly reduced compared with untreated mice. These results demonstrate that the essential oils are bactericidal against H. pylori without the development of acquired resistance.

Insect fighters?
Southeast Asian J Trop Med Public Health. 2013. Efficacy of herbal essential oils as insecticides against the housefly, Musca domestica L. Entomology and Environment Program, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Lat Krabang, Bangkok, Thailand. The insecticidal effects of 20 essential oils derived from herbs, were tested against the housefly species Musca domestica L. using a susceptibility test. Each was applied in ethyl alcohol at concentrations of 1, 5 and 10% (v/v). Ten percent concentrations of Cymbopogon citratus (lemongrass), Mentha piperita (peppermint) and Lavandula angustifolia (lavender) oils were the most effective, showing 100% knockdown at 30 and 60 minutes. The KT50 values for C. citratus, M. piperita and L. angustifolia were 5.14, 5.3 and 8.2 minutes, respectively. These essential oils caused 100% mortality among houseflies 24 hours after exposure. The LC50 values for C. citratus, M. piperita and L. angustifolia were 2.2, 2.6 and 3.2 minutes, respectively. This study reveals lemongrass, peppermint and lavender essential oils have the potential to control housefly populations and should be further studied for field applications.

Neck pain
J Altern Complement Med. 2014. The effectiveness of essential oils for patients with neck pain: a randomized controlled study. Sixty participants with a history of neck pain and Neck Disability Index (NDI) score >10% were selected and randomly divided into control and experimental groups. For the experimental group, the intervention included 3% concentration cream composed of four essential oils: marjoram, black pepper, lavender, and peppermint. For the control group, only an unscented cream was provided. For 4 weeks, all patients applied 2 g cream directly to the affected area daily after showering or bathing. The essential oil cream developed in this study can be used to improve neck pain.

New research
PLoS One. 2015. Estimation of Potential Availability of Essential Oil in Some Brands of Herbal Teas and Herbal Dietary Supplements. The aim of the study was to estimate potential availability of essential oil in some brands of herbal products. A comparison was performed on the basis of the essential oil yield in the unprocessed raw materials such as leaves of peppermint and lemon balm and inflorescence of chamomile as well as herbal tea bags and in dietary supplements. The yield of essential oil was determined by distillation. Essential oil was analyzed by GC-FID and GC-MS. It was found that the average potential availability of essential oils in the products such as dietary supplements for the doses recommended by the producers is lower than in the corresponding tea infusions: for peppermint formulations approximately 6-fold lower, for the formulations with lemon balm about 4-fold lower, and for the chamomile preparations about 3-fold lower. It was found that essential oils extracted from herbal teas have a similar chemical profile with characteristic deviations in the amount of individual components, which arise from the origin of the raw material. In contrast to homogenous pharmaceutical herbal mixtures consistent with, the Pharmacopoeia requirements, herbal teas (available in grocery stores) and dietary supplements are often out of control in terms of the yield and composition of the essential oil, which is primarily responsible for the health benefits and aromatic qualities of these products. Analysis of the composition of the dietary supplements showed that they contain on average significantly lower amounts of plant material compared to the herbal teas.

Questions
I read recently an article by Dr. Stephen Barrett regarding essential oils and the Gary Young company. My sister uses these oils constantly. She has many health problems and I am concerned that the Gary Young oils are at best exacerbating her problems and at worse causing them. She inhales, puts them on topically and ingests them. The odor in her bedroom is so powerful that I can't stay for more than a few minutes without getting a headache. What do you know of using essential oils, their efficacy and dangers?
    This is too broad a topic to answer since there are dozens of commonly used essential oils and each one has a different benefit or safety concern and it is not easy to predict the reaction from the interactions of several of these whether ingested orally, inhaled or used topically.

Essential oils suppliers
Email received in Sept 2007 - We are the essential oils supplier for Aarya Aroma, a Nepal based distiller and herbs grower. We use 100% natural raw materials for our products. We are interested in introducing our products to you, pure and fresh straight form the foothill of the Himalayas of Nepal. We carry Anthopogon Oil, Aromise, Calamus, Chamomile German, Cinnamomum, Citronella, Curcuma Zedoaria, Eucalyptus, French Basil, Jatamansi (Spikenard), Juniper Leaf/Berry, Lemongrass, Mentha Arvensis, Palmarosa, Tagetes, Valerian, Wintergreen, Xanthoxylum.

Here is Rajesh writing to you from INDIA. I represent an exporter of essential oils in New Delhi. If your industry requires essential oils, carrier oils, spice oils, and/or various other natural products, we would like to be considered for your next round of purchasing. We are a manufacturer and exporter of such items. More importantly, we never use any chemical, pesticides on our herbs/plants - they are grown and cared for from cultivation to distillation. Since these items have a vast range of suitable habitats worldwide but only thrive in certain atmospheric requirements -you may not be too careful in choosing a supplier! Today, the world has awakened to the immense potential of pure natural herbal extracts, essential oils, spice oils, and various natural products in the field of Aromatherapy Medicine, Cosmetics, or straight consumption (personal use). It is quite difficult, though, to find and identify a quality collection of these products for your business due to the vast range of individuals offering such services, and the numerous growing areas. My Company has done just that and we are able to meet your ordering requirements in a quick and cost effective manner - letting you focus on your business. Below, we have provided our Product List. Some of the oils on this list are imported due to growing conditions, but you have our guarantee that these imported items meet our exacting quality standards. Some oils may be expensive but we assure you that our prices are highly competitive and the quality of these products can’t be beat. At your convenience, please review this list and contact us regarding anything you would like further information on. If you have a request for items that you did not find on our list, please contact us, as we may be able to locate them for you! SEEMA INTERNATIONAL F-17/57, SECTOR-8, ROHINI, NEW DELHI-110085, INDIA.
PRODUCT LIST: -
PURE NATURAL ESSENTIAL OILS / HERBAL EXTRACTS
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AJOWAIN OIL
ANISE
APRICOT
BERGAMOT
BETEL LEAF
BAN TULASI
BAWCHI OIL
BURSEIRA
BLACK PEPPER
CAJEPUT
CALAMUS
CHAMOMILE
CAMPHOR
CARAWAY
CARROT SEED
CASSIA OIL
CARDAMOM OIL
CEDAR WOOD
CELERY SEED
CELERY (TERPINE) OIL
CHILLY SEED OIL
CINNAMON LEAF OIL
CINNAMON OIL
CITRONELLA OIL - JAVA
CLARY SAGE OIL
CLOVE BUD OIL
CLOVE OIL RECTIFIED
CORIANDER
CUBEB OIL
CUMIN SEED
CURRY LEAF OIL
CYPRIOL OIL (NAGARMOTHA)
DAVNA OIL
DILL SEED OIL
D-CARVONE 95%
EUCALYPTUS
FENNEL SEED
EVENING PRIMROSE
FRANK INCENSE
GARLIC
GERANIUM
GERNIOL (EX PALMAROSA OIL)
GINGER GRASS
GINGER
GRAPE FRUIT
GRAPE SEED
GULTHARIA OIL
HARSHINGAR
HEENG
JASMINE
JAMROSA
JOJOBA
JUNIPER BERRY
JUNIPER LEAF
KULANJAN
KALAUNJI
KALAUNJI OIL (FATTY)
KARANJ SEED OIL
LEMON GRASS
LEMON OIL
LIME OIL
LAUREL BERRY OIL (KOKILA)
LINALOE BERRY OIL
LAVENDER
Lemon Thyme
     Zhong Yao Cai. 2013. Chemical composition of essential oil from Thymus citriodorus and its toxic effect on liver cancer cells.
LICHEN OIL
LINALOOL EX-BASIL
LINALOOL EX-CITRETTA
MACASSAR OIL (KUSUM OIL)
MACE OIL.
MANDARIN
MANGO GINGER
MENTHA CITRETA
MENTHA PIPERETA
METHYL CHAVICOL 99%
MENTHOL LIQUID
MUSK MELON
MYRRH OIL
NAR KACHUR
NEEM
NUTMEG OIL
ORANGE OIL
PALMAROSA
PARSLEY OIL
PATCHOULI OIL
PAPRIKA
PARILA SEED
PETIT GRAIN OIL
POMEGRANATE
PIMENTO BERRY
PINE OIL
PEPPERMINT
PUMPKIN
RED THYME OIL 50%
ROSEMARY
ROSE OIL G-II
ROSE
SESAME
SHILAJIT EXT.
SPEARMINT
TEGETES
TEA TREE
THUJA WOOD
TURMERIC LEAF
TOMAR SEED
TURMERIC
TULSI OIL
VETIVERT
VALERIAN ROOT EXTRACT
WHEAT GERM OIL
WINTERGREEN
WATER MELON
YARA YARA
YLANG YLANG
Canaga OIL