MAC's Studio Fix Fluid SPF 15 is a lightweight foundation with medium-to-full buildable coverage and a matte finish. This formula lasts up to 24 hours without poring, streaking, fading, settling, smearing, or caking. These foundations blend easily into the skin and keep it oil-free for up to six hours. They are also sweat and humidity-resistant while hydrating and protecting the skin from harmful UV rays.