SJA, speaking just for myself, I don't know the carrier, bought my stuff rather than made it. It is a liquid rather than a gel. I have straight Test base which seems colorless and odorless and watery in consistency, and I have straight Tren base which is already yellow before it hits the skin, might have a slight odor and, while still liquid, is a little thicker than the Test. There is no unpleasant odor at first or later on my breath and sweat, so I guess DMSO is out or present in a very low % There IS a weak alcohol odor, and the potions dry pretty quick on my skin. Does this help, or is it too vague?