Setup & First Use: Before your first full application, it's recommended to swatch a small amount on your jawline or inner wrist to confirm shade match and check for any skin sensitivities, especially if you have sensitive skin. Compatibility: The NARS Radiant Creamy Concealer is formulated to be compatible with all skin types. It can be used alone for a natural look or layered seamlessly over or under foundation. It pairs well with both liquid and powder foundations. Care: To ensure the longevity and hygiene of your concealer, always twist the cap tightly after each use to prevent drying and contamination. Store the product in a cool, dry place, away from direct sunlight and extreme temperatures. Avoid pumping the wand multiple times in and out of the tube, as this can introduce air and bacteria.