M.A.C Prep + Prime 24-Hour Eye Base is an innovative primer that keeps your eye makeup looking fresh and vibrant all day long. The humidity- and sweat-resistant formula prevents shadows from creasing and fading while allowing the hues to stay color-true for up to a full day. Comfortable and lightweight, the primer is infused with the rich antioxidants of vitamin E and is ideal for all skin tones and types. How to use: Apply all over your eyelid. Allow to dry for a minute before the application of eye makeup. Brand: M.A.C. Style Name: Mac 'Prep + Prime' 24-Hour Extend Eye Base. Style Number: 1037530. Available in stores.