Jun 22, 2016 I am noticing more and more adoption of MCT being used as the carrier in UGL versus GSO. MCT means medium chain triglyceride oil(usually derived from cococnut oil). Here are a few questions that I am wondering. 1) Does it hold more in concentration that that other oil carriers? 2) Could MCT be used in place of EO? 3) Synthol is a blend of three ingredients – 85% oil (usually medium chain triglycerides), 7.5% lidocaine (local anesthetic/painkiller), and 7.5% benzyl alcohol (disinfectant/sterilizer). I would hope the MCT is not the factor that causes scarring. Anyone know exactly how Synthol works? What causes the scarring? MCT? or the other ingredients? I'd hate to be injecting something that acts like Synthol in the long run. 4) Any additional input on this thread would be helpful as well.