One Full size MAC Cosmetics PREP + PRIME 24-HOUR EXTEND EYE BASE EYESHADOW PRIMER 12ml /.4oz Specially formulated to prolong the look of your eye makeup. This primer keeps eye makeup looking fresh and vibrant all day. Extends wear of your eye shadow for up to 24 hours! This innovative formula saves shadows from creasing and fading, while allowing hues to stay colour-true for up to a full day. Comfortable and lightweight and is ideal for all skin tones and types