When (and how) to use Teint Idôle Ultra Wear All Over Concealer by Lancôme

All-In-1 Usage: -------------------- * Conceal & Highlight: Apply as an under eye concealer to brighten dark circles; Apply on the forehead, down the nose, and on the cupid's bow and chin to highlight the high points of the face. Choose a shade lighter than your base skin tone. * Correct: Apply as a dark spot concealer directly on to blemishes, dark spots, and redness to even skin tone. Tap with finger to seamlessly blend. Choose a shade that matches your base skin tone. * Contour: Apply on the forehead, sides of the nose, cheek bones and jaw line to sculpt your face. Choose a shade 2-3 shades deeper than your base skin tone.