Since the ‘no-makeup makeup look’ is all about looking natural, I like to be conservative with my concealer. I still use a fuller coverage concealer because my eyes typically show the most signs of tiredness. My absolute favorite concealer for looking more rested is the Tarte Shape Tape (my shade is light medium honey). For a more natural look, I would definitely choose a shade that matches your skin tone or one shade lighter. For any imperfections, I like to spot conceal any with the same concealer applying it with a small brush and blending it with a clean finger.