The AC Prep + Prime Skin Refined Zone by M·A·C is a universal liquid and gel formulation designed for oily skin. With a volume of 0.5 fl oz and an SPF of 0, this face primer is perfect for women looking to refine their skin before applying makeup. The period after opening for this product is 24 months, ensuring it stays fresh for extended use. This clear shade primer is a must-have for achieving a flawless makeup look.