Isopropyl Myristate Good Emollient Hydration Isopropyl Myristate opis Isopropyl myristate is a texture enhancer and emollient as used in cosmetics. There is also research showing it can help enhance the absorption of ingredients in a cosmetic formula. Isopropyl myristate is often called out as being a particularly bad pore-clogging ingredient; however, this assessment comes from dated research that doesn’t apply to how this ingredient is used in today’s cosmetics.