MAC NW35 Studio Finish Concealer

Concealers are to me, the key to a more vibrant look when applying makeup.  I went from using MAC NW45 to MAC NW40 and now I use the NW35 Studio Finish Concealer.  Makeup is trial and error and it took me several tries to get the right color that would make my eyes pop.  I also got a sample of the Select Cover-up NW35 and will post how well it works and if I end up purchasing it - the MAC artist said the coverup is the same as the studio finish concealer but just in the liquid form.  I've seen it used over the studio finish concealer for extra coverage so I'm going to give it a try.