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Great question, @alchemage! The lavender was used mostly for nervous tension. I absolutely love the smell of lavender, so it's always a great addition in my opinion. Lavender is considered a middle note in the perfume world so it helps to balance the other aromas. I should also add that the lemongrass stands out among the other oils, so adding more lavender or geranium would be wise if lemongrass is too much to handle!