MAC Stack Mascara Stack it up. Bold, buildable volume starts here. The MAC Stack Mascara delivers customisable, clump-resistant volume that lets you layer to your desired intensity — from natural lift to full dramatic lashes. The unique brush design coats every lash from root to tip. Why You'll Love It Stackable formula — apply coat after coat for more volume without clumping Lifts, lengthens, and volumises from the very first application Clump-resistant brush ensures even, separated lashes every time Buildable intensity — natural or dramatic, you choose Key Benefits Long-wearing formula stays in place all day Works on straight, sparse, or short lashes for a visible difference Iconic MAC formula — trusted by makeup artists worldwide Removes easily with a standard eye makeup remover How to Use Wiggle the brush at the root of lashes and sweep upward to the tips. Apply a second coat before the first is fully dry for extra volume and lift. Stack additional coats for full, dramatic lashes.