Indonesia is by far the largest producer of patchouli and this good quality oil has been imported from sumatra it is extensively used in perfumes in combination with a wide variety of other oils this oil is unusual in that it that tends to improve with age the distinctive aroma of patchouli makes it familiar to many people and may explain its popularity in perfumes and skincare products try blending 1 drop of patchouli 1 drop of geranium and 2 drops of bergamot in 10ml of peach kern