Simplers Botanicals Essential Oil Vanilla CO2 - 2 ml. Simplers Botanicals Essential Oil Vanilla CO2 is a familiar, rich, sweet fragrance that softens all blends. Simplers Botanicals Essential Oil Vanilla CO2 from Madagascar is naturally thick and resinous. Hold Simplers Botanicals Essential Oil Vanilla CO2 in your pocket or hands for a few minutes to help liquefy. Simplers Botanicals Essential Oil Vanilla CO2 combines well with vetiver, spice, resin and citrus oils. The relatively new method of extraction called CO2 uses supercritical carbon dioxide as a non-toxic solvent. Using high pressure and low heat in a closed chamber, the CO2 is able to extract high amounts of volatile fragrance compounds and larger aromatic molecules that cannot be obtained through steam distillation. The gas is completely removed when the pressure is released leaving no solvent residues. The result is an incredibly strong aroma very true to the plant. How are Essential Oils made? Steam DistillationEssential Oil distilleries have classically used hydrodiffusion (steam distillation) to produce Essential Oils. During distillation, steam runs through the plant material. The hot steam breaks down the cells of the plant and carries the essential oils to a cooling chamber where the hydrosol (water portion of the plant) and the essential oil (volatile oils of the plant) are then separated. Like fine wines, the end result is dependent upon several factors which include: growing methods (preferably Organically grown, Bio-dynamically grown, or Ethically wildcrafted), geography, climate, soil conditions, and most importantly, the technique and expertise of the distiller. The amount of essential oil that each distillation yields is dependent upon the plant. Price is usually a reliable indicator of how much oil each crop yields. For example, it takes approximately 30 rose buds to produce a single drop of rose otto essential oil.