Fractionating coconut oil strips out the long chain fats that make virgin coconut oil turn solid on a cool shelf, and takes the coconut smell with them. What is left is a clear, thin, odourless oil that stays liquid at room temperature and absorbs quickly, which is exactly what you want underneath an essential oil.

Its ingredient line is a single item: Caprylic Capric Triglyceride. Plant Therapy sources the nuts from India, Malaysia and the Philippines, and the maker's direction is to use it at full strength as a carrier or as an ingredient in aromatherapy projects. This is the 16 fl oz bottle, enough to keep a roller blend habit going for a long time.