Based on a very scientific calculation of the number of packages that arrive in our office every day, we estimate that a new product is introduced every 46 seconds in the United States. Seriously. It's a fact? But it's not the ridiculous variety of products -- the cream eyeshadows, powder palettes, brow boosters and lip plumpers, nevermind the avalanche of foundations and BB creams -- that overwhelms us. It's the process of how (and when) to put them on.

Do you line your eyes first, then sweep on a foundation? Start with a spot concealer or dab it on just before the final setting powder? Because there is a trick to applying makeup to maximize the effects and so that it stays put -- no smudging that perfect cat eye or flurry of powdery shadow stuck in your under-eye concealer.

We asked celebrity makeup artists Margina Dennis and Julia Papworth -- responsible for the gorgeous looks of Petra Nemcova, Cameron Diaz, Bella Thorne and Emma Roberts -- to break it down for us. And here's what we got: the definitive, step-by-step order to putting on a flawless face every day. Easy as 1-2-3.