MAC Studio Waterweight SPF 30 Foundation Introducing an innovative foundation that delivers colour in an ultra-fluid, elastic gel- serum formula. With a virtually weightless feel, this formula is extraordinarily comfortable, lasting for hours. With stay-true colour and sheer medium buildable coverage, it softly blurs imperfections such as pores and fine lines, while also controlling oil. The addition of Moisture-Fusion Complex provides immediate and all-day hydration, leaving skin feeling quenched and silky to the touch. The unique dropper provides you with a drop of perfection. Apply to face using a sponge or foundation brush, then blend with fingers, sponge or brush.