As a primer: Lightly apply over cleansed and moisturized skin before makeup to smooth and prep your face for long-lasting wear. As a setting powder: After foundation, use a fluffy brush or sponge to gently press the compact onto areas prone to oiliness, such as the T-zone, for an even matte finish. On-the-go touch-up: Keep it handy for quick touch-ups throughout the day to blot away excess oil and maintain a fresh, flawless look.