Caprylic/capric triglyceride is a blend of glycerol and two fatty acids, caprylic and capric acid.
The main function of this ingredient is as a moisturizing agent, where it acts as an occlusive and emollient. An occlusive moisturizing agent is one that creates an oil-based protective layer across the skin, thereby preventing water loss. Caprylic/capric triglyceride performs this function by aligning the long carbon tails of the two fatty acids along the surface of the skin, which creates that oil-based protective layer.
This clear, colorless liquid also functions as a solvent, in which it can dissolve a wide range of liquids and can suspend insoluble solids.