Coconut Fractionated Carrier Oil MCTFractionated Coconut Oil is very popular choice as a carrier oil for use with essential oils. Coconut is inexpensive, absorbs quickly, has almost no aroma at all and has the added advantage of a long shelf life at room temperature without rancidity. For those of you who like a little bit of chemistry informationthis liquid form of coconut oil has had the smaller fatty acids and the long chain triglycerides removed. Without these ingredients there is a