This lightweight fluid Studio Fix 24-hour Smooth Wear Concealer provides seamless coverage, blurs imperfections and offers long-lasting comfortable wear. This all-day concealer formula wears up to 24 hours while providing medium-to-full buildable coverage.Skin looks smoother, even and selfie-ready. Its small sponge-tip applicator makes it easy to zero in on any area, making it your must-have magic wand. Skin looks fresh and perfected with a natural matte finish that's never cakey. COMPOSITION A must-have magic wand for skin. On-the-spot transfer-resistant, long-wearing concealer that smooths skin's appearance. Infused with hyaluronic acid to keep your skin moisturized, with a formula that's also dermatologist and ophthalmologist tested. MORE INFORMATION Choosing the right shade of concealer can become a real mission. M A C Cosmetics finally delivers the secret. Each shade is identified by a letter and a number. The Number indicates how dark the shade is. The higher the number, the darker the shade. Between 4 and 20, the foundations are designed for fair complexions. Medium skin tones will have numbers between 20 and 40. Finally, darker complexions between 40 and 54. The Letter represents the undertone, ie whether warm or cold tones. If the color of your veins is green, your undertones are warm. If the veins are mostly blue or purplish, you have cold undertones. Finally, if you have both, your undertones are neutral. C = Cold NC = Neutral and Cold N = Neutral NW = Neutral and Warm W = Warm M A C Beauty Tips: When in doubt, always go for the lightest shade. This allows you to avoid any risk of demarcation!