Mac Professional Waterproof BaseMAC Professional Waterproof Base Achieve a flawless, long lasting makeup look with the MAC Professional Waterproof Base, specially formulated to deliver a smooth and even canvas for your foundation. Whether you're facing a humid day or a special occasion, this waterproof primer ensures your makeup stays put without smudging or fading. Key Features: Waterproof Formula: Designed to resist water, sweat, and humidity, keeping your makeup intact all day.