8. Wait a few minutes to let your concealer “cook” (or, oxidize and slowly melt).
Your body heat will warm up your concealer (and, for that matter, your foundation). As it sits, it may change color and texture ever so slightly. So if you give it a minute, you’ll be working with the makeup in it’s “true form,” the way it will be on your face for the rest of the day. More on this here.