Usually only employed for spells of a positive nature (although some of Hyatt's informants suggested there were some negative uses for it.) The primary -- and often sole -- ingredient is lemongrass.
Theoretically can be used for works of any kind, but in practice seems to most often be used for neutral-to-negative practices. Recipes vary by maker, but I myself used tobacco oil in this place.
Another that is generally used for positive workings though from time to time can be used to bless a negative spell if there's potentially righteous motives for it. Most recipes for this formula include frankincense, which is a powerful ingredient in its own right.
Similar but slightly different from Blessing formula, Holy is seen as being a bit more sacred. Some folks even say that only priests are supposed to be using such formulation, and only use it in a modified form (Abramelin oil is one such modification, and can be used in place.) Nevertheless confident magicians often employ the mixture to increase power.
Frequently is designed for some effect on mental faculties, to put a person in a mindset more conducive to the practice of magic. Used for beneficial and harmful spells alike.
Supposed to be the most powerful oil and to lend its properties to other formulas and tools into which it's put in contact.
An ingredient in many of the aforesaid formulas, frankincense alone can be used to enhance other spells.______
Conjure oils come in so many different types, and it can be hard to know whether you'll be best off buying Good Luck, Lady Luck, Fast Luck, Lucky Mojo, Lucky Hand, Lucky 9, Lucky 7, Lucky 13, etc. Over time one can work up quite a collection -- I myself barely have space to store all the oils I've acquired.
Here are some easy ways to adapt a few staple oils to other purposes by adding 1 extra ingredient to each. This can often save you having to run out and buy a whole new $7 bottle of stuff, especially if it's likely you'll only need the combination one time.
TO A BASE OF VAN VAN
add rose for love
add lavender for peace
add allspice to improve business
add pine for purification
TO A BASE OF MONEY DRAWING
add ginger for fast money
add sage for financial wisdom and skill
add clove for money gifts and favors
add calamus to get money owed
TO A BASE OF JOHN THE CONQUEROR
add galangal for court cases and legal matters
add bay for victory
add dragon's blood for uncrossing and for strength*
TO A BASE OF FRANKINCENSE AND MYRRH
add sage for wisdom
add cinnamon for money blessings
add orange flower for marriage
add bay for success
add lemon verbena for cut and clear
*If you are using the plain resin, be careful how it's applied -- used to directly dress candles, sticky resins sometimes put out the flame as they melt and adhere to the wick, and added whole to washes or baths they can dissolve into a sticky texture like chewed gum, and be just as difficult to remove.