Kindly note that we only USE pure therapeutic grade of essential oils and the aroma may slightly vary from batch to batch. This is due to the different climatic conditions, nutrient content of soil, water availability and so on, means that, in nature, every single batch of authentic essential oil – the true ‘essence of the plant’ — will have a slightly different chemical profile and therefore a slightly different aroma. If you get a product that has consistently the same smell from batch to batch it is almost a certain indicator that the oil has been adjusted to standardise the compounds. Those chemicals used for the adjustment are almost certainly synthetic.