What it is: An extreme-wear, ultra-fluid water-based foundation that blends full coverage with a lightweight formula to deliver a natural matte second skin that goes from day to night. Who it's for: Anyone who wants full-coverage color and a natural matte finish. What it does: According to Peter Philips, the creative and image director for Dior Makeup, Forever Undercover contains the highest concentration of pigments in all of Dior's foundations, which ensure perfect blemish correction with a finish that is fresh and matte enough so you don't need to follow with a powder. It provides an imperceptible finish for 24 hours. Its weightless finish is ultrafine and highly pigmented. How to use: Begin by priming your face to create a smooth base to improve the hold and coverage of your foundation. Apply Undercover Foundation with your fingers or a foundation brush for full coverage. Style Name: Dior Diorskin Forever Undercover 24-Hour Full Coverage Water-Based Foundation. Style Number: 5529212. Available in stores.