CO2 Selects are oils that have been extracted using CO2 at lower pressure. CO2 Selects contain only the volatile CO2-soluble components. The heavier waxes, resins, and color compounds are not present in CO2 Selects. The viscosity of CO2 Selects are generally thicker than steam distilled essential oils but are still still pourable. CO2 Selects resemble steam distilled essential oils in composition and benefitial applications, however, they may contain more volatile components that are not extracted during steam distillation.
CO2 Totals are oils that have been extracted at higher pressure. CO2 Totals contain both volatile and non-volatile CO2 soluble components of the botanical. CO2 Totals contain the essential oil, heavier waxes, fatty acids, resins and color compounds, making the extract very similar to the plant itself. CO2 Totals are generally thick and pasty but are soluble in essential oils and vegetable oils (although some may need gentle warming).