Bobbi's Pretty Powerful Solution: You're not alone. From light circles to extreme undereye darkness, all women occasionally battle that "fatigued" look. There are all sorts of causes for it: aging, genetics, allergies, stress, nutrition, lack of sleep, etc. But thank God for concealer. It's Bobbi's "secret to the universe" and the key to faking that fresh, well-rested look that we get from a good night's sleep. Bobbi's foolproof method: Apply a peachy or pink-toned corrector (to counteract any dark purplish tones) then layer on a creamy, yellow-based concealer. Pat it into skin with your finger for a seamlessly blended finish. Once the concealer is done and perfect, then comes the black eyeliner, Bobbi's other super-favorite beauty product. Draw a thick line just along the upper lashes to define your eyes, then brush on two or three coats of black mascara—again, just to the upper lashes. Sweep pink blush on the apples of your cheeks, swipe on some lip gloss, and you're ready to go.