Isopropyl Myristate, 8 oz Sold by weight. Isopropyl myristate, a liquid wax used as an emollient, is a widely used fatty compound derived from isopropyl alcohol and myristic acid. It is used in cosmetic and topical medicinal preparations where good absorption through the skin is desired and to improve the feel of lotions. It may be used as an emulsifier and moistening agent for cosmetics and is one of the most important additives in high-grade cosmetics. It’s a colorless liquid which is insoluble in water. Poisonous if swallowed, may irritate the eyes. Usage rates when making toiletries: 5%-10%. INCI: Isopropyl myristate.