What it is: A 24-hour foundation that delivers a luminous matte finish and full coverage in one drop while feeling breathable, weightless and comfortable. What it does: Combining the best of natural luminosity with a perfecting mattifying effect, Gucci foundation instantly blurs pores, evens out the complexion and blends away imperfections. The matte effect is never dull and stays fresh all day long without looking cakey. Infused with hyaluronic acid and black rose oil, the formula helps boost and maintain skin hydration. How to use: Dispense one pump on the back of your hand. Dab a third of it onto your favorite tool (clean fingers or a foundation brush). Starting at the nose, gently pull it outward and blend in with circular motions. Add more if needed and apply to the forehead, chin and jawline.Pro tips: Each shade has a two-part code: 1. A number for the surface color of your skin: Fair (1XX) to Dark (5XX). 2. A letter for your skin's undertone: C for Cool (pink hue, rarely tans), N for Neutral (pink and golden hues, tans sometimes), W for Warm (yellow or golden hue, tans easily), O for Olive (yellow and greenish hues, tans easily).