― Yet another MAC post, I hope you all don't mind! Surely, with all these rave reviews I give the brand it just shows how much I favour it over any other (Apart from Benefit, perhaps!) .. and this is no different. ∙ Fix+ is a finishing mist/skin refresher from MAC that is used to hydrate the skin and set makeup after application. I have always found that after using powder skin can look dry, chalky and it is quite obvious that you've used powder .. but with MAC's Fix+ it enables your skin [...].