>>1567944concentrated essences (distilled to the point of oil) from certain (medicinal) plants - basically medicinal plants on steroids
got a bad rep from hippies who only use them for their smell (usually masking it with reasons like purifying your chakras)
they have many medicinal uses and are quite potent, some being natural antibiotics in their own, even superior to synthetic ones because the essential oil of one plant contains many active substances that work together making it nearly impossible for bacteria to develop resistance to, as is now often the case with traditional antibiotics
surprisingly few research is done in this field however and understandably so since, cliche as it may seem, big pharma would suffer from it
you'll also see it from the default defensive-mocking programmed reaction you get from the npcs whenever you bring it up, it's similar to telling them willow bark is basically aspirin because they have been thoroughly de-rooted from the natural world and can only trust what is man made, wrapped in shiny plastic and advertised to them
