first of all, pores do not "open" and they do not "close" they simply appear to do so, this is why splashing your face with cold water does not "shrink" the pores.
secondly, evian or any other spray that is purley water only lays the pigment or powder flat and kinda helps. If you want to "fix" your makeup, you need soemthng that will bind the particles together, like mac's fix + or charged waters and if im not mistaken mufe makes a spray as well. HTH

and i can get you more info on the waters if you'd like im sure theres a do it yourserlf way