Patchouli refers to an oil obtained from the leaves of the patchouli plant, a superb fixative. Patchouli was discovered in India, it is also cultivated in Malaysia and Indonesia. Its odor is earthy, dry, woody and spicy. Patchouli is often used in Oriental and chypre blends (fragrances)

Also, Patchouli oil produces a woodsy, eathy and smoky aroma. Used as additive to hot oil treatments and shampoos. Also used for bath oils, body lotions and perfumes. Patchouli mixes well with ylang-ylang, tonka bean, lemon, musk seed, jasmine and rose oils as well. Good for treating a variety of yeast infection, helps heal wounds and prevents viral or related infections. Steam distilled from dried fermented leaves. It is also used in the Far East as a moth repellent.

Among the perfumes which used Patchouli (oil) as based notes are:
Essence of United Colors of Benetton Woman (for women)
Black Amethyst (for women) by Bath and Body Works
Badgley Mischka Couture (for women) by Badgley Mischka
Aramis (for men) by Aramis
Passion (for women) by Annick Goutal
Kingdom Summer (for women) by Alexander McQueen