Basil, Costa Rica, is similar to tulsi from India where it is used to improve concentration and relieve congestion in the head.  It is anti-infectious and often the first choice for migraines or where there is neuropathy or arthritis as well as paralytic conditions. It is used to fight intestinal parasites and to stimulate the liver and pancreas. It combines exceptionally well with eucalyptus or lavender essential oil.

Cinnamon Bark is often used as a bactericide or for lowering blood sugar.  It is also antifungal and antimicrobial.  It is irritating and should not be used on skin; however, it can be used to purify air and reduce risks from airborne pathogens.  It can also be used as a flavoring or to relieve abdominal bloating and flatulence. It combines exceptionally well with orange essential oil.

Clove Bud is most commonly used for tooth aches but is very antimicrobial and antifungal.  It is an excellent respiratory and cardiovascular aid. There is some research suggesting it normalizes thyroid function. If diluted (1% essential oil), clove oil can be used on the skin for acne, warts, scars, and parasites. It blends well with basil and cinnamon as well as lavender.

Fennel, Italy, has a hint of a licorice taste and aroma and is very popular in India and parts of Europe.  It's delicately aromatic and relaxing.  It is used to detoxify and strengthen the liver, relieve colic and spasms, promote healthy digestion and assimilation of nutrients, and cleanse the mouth after eating.  Some believe it promotes hormonal balance. The oil is made from the seeds and is non-toxic and non-irritating.

Frankincense, Boswellia frereana, is mainly used to reduce inflammation, but it can also be applied to scars.  It is considered to be so spiritually elevating that it relieves depression.  It improves breathing and promotes relaxation of a soothing and harmonizing quality. Though mainly used ritually, recent research has found significant uses in the treatment of cancer and diseases of the reproductive system and urinary tract. It is non-irrating and blends well with lavender and lemon.

Lavender, wild, is one of the best known essential oils.  It was added to bath water in Roman times and is associated with both cleanliness and deeper forms of hygiene, such as wound care, including serious abscesses.  It is antispasmodic and soothing and is believed to lower high blood pressure and relieve headaches. It is non-toxic and non-irritating and blends well with lemon and peppermint when taken to reduce spasms and relax nerves.

Lemon is considered to be one of the adaptogens.  It is antifungal, insecticidal, antiseptic, and antimicrobial.  It is also a vermifuge, decongestant, febrifuge, and vasoconstrictor.  Externally, it can be used to reduce cellulite, acne, and warts.  It can be gargled for sore throats or taken internally to promote circulation and reduce the risks of varicose veins, phlebitis, and thrombosis.  It is a pancreatic stimulant and lowers blood sugar.  It is non-toxic and non-irritating unless used in direct sun when some individuals may exhibit signs of phototoxicity.  It combines well with other citrus oils and lavender.

Lemongrass, organic, Haiti, is often used for skin toning and to balance the central nervous system, but studies suggest it is one of the better antifungal oils. It can be used for athlete's foot and makes a good insect repellent. It is also used to relieve symptoms of jet lag.  Tiny amounts can be taken internally to stimulate digestion and relieve flatulence. It combines exceptionally well with lemon or tea tree essential oil.

Oregano, wild, is one of the truly important essential oils.  It is an excellent parasiticide and anti-infective.  It supports immunity in the face of a host of microbes and toxins.  It is very potent and is nearly always used diluted, particularly when applied externally.  It should not be used during pregnancy.  It can be blended with other essential oils or herbal extracts.  Try it with lemon or tea tree.

Peppermint is another famous essential oil.  It is a neurotonic and chologogue with signficant antimicrobial action.  It is antibacterial and antiviral as well as antifungal.  It is useful in cases of gingivitis, toothache, nausea, liver congestion, and irritable bowel syndrome.  It enhances immunity and can even be used to reduce risks of epidemics such as cholera and yellow fever.  On the subtle level, peppermint is believed to increase receptivity and insight and even to promote the ability to prophesize.  Obviously, there is much lore surrounding peppermint.  In moderation, peppermint is nontoxic and even safe for use during pregnancy.  It blends nicely with lemon and lime or other respiratory oils such as eucalyptus.

Rosemary, Morocco, is stimulating and can be used where there is drowsiness and/or sluggish elimination. It is also antifungal and is often considered for used with candida and is especially indicated where there is pulmonary congestion. Has been shown to be clinically effective against staphylococcus and streptococcus. It should not be used during pregnancy or by people suffering from epilepsy. It blends well with many other oils: basil, ginger, lavender, lemon, and peppermint.

Tea Tree is a very powerful antiseptic and insect repellent.  It is analgesic and sedative.  It is said to aid recovery from heart attacks, but mainly it is used on skin conditions, everything from acne and athlete's foot to chicken pox and herpes. It is antiseptic to the urinary tract and promotes flow of urine.  It is a mood elevator and therefore helps combat both fatigue and depression.  It combines well with cinnamon, eucalyptus, lemon, and peppermint.