To begin using your MAC Studio Fix Fluid Foundation, ensure the bottle is shaken well before each use to thoroughly mix the product. Apply to clean, moisturized skin. This foundation is compatible with a wide range of primers, moisturizers, and setting powders; choose products that complement your skin type and desired finish. For instance, an oil-controlling primer can enhance the matte effect, while a hydrating primer can prevent the matte finish from looking too flat on drier areas. Always store the foundation in a cool, dry place away from direct sunlight to maintain its consistency and efficacy. To care for your foundation and skin, regularly clean your application tools (brushes, sponges) to prevent product buildup and bacterial growth. If using a pump (sold separately), clean the dispenser tip periodically. Ensure the cap is securely closed after each use to prevent drying out and contamination.