First and foremost I just want to say I love MAC Mineralize Skinfinishes - whether it be blushes, powders, whatever - based on the fact that they last for agesss. You could seriously use one product everyday for 6 months and barely put a dent in it. Even looking at my powder now (and other blushes I own) I honestly would not be able to tell that it has been used. I would truly believe that it was brand new in the box.
The powder itself is very, very finely milled and it gives you the perfect natural (demi matte) finish. It seriously makes your skin look flawless and airbrushes when applied over your foundation or even BB Cream/tinted moisturiser. Being such a lightweight powder, you cannot 'over do it' and make yourself look cakey. However the beautiful finish only lasts 2 hours on me ..in the winter time and probably a lot less during the hot, sweltering summer time. My T-zone area becomes exceedingly oily causing my foundation to fade in those areas.
I found that the powder works best for my skin if I set my t-zone with an actual mattifying powder (Rimmel Stay Matte) and just use the Mineralize Skinfinish on the outer portion of my face. I also thought I should mention that the powder applies best with the ELF Flat Top Powder brush rather than a normal domed shaped powder brush.
I've also heard through the grapevine that you can actually use these Mineralize Skinfinishes as light foundations as well when applied wet - and of course using MAC's Fix+ for best results. Unfortunately I haven't used this as a foundation before (but very keen on trying) so I cannot comment on how well it performs. If any of you have tried this method please let me know if it is any good!
Overall I do really look the concept of this powder but I am quite disappointed that it didn't keep the oiliness at bay. I do think that this is a potential holy grail item for all those with normal complexions (well obviously as it is already a cult favourite), but for us oily skin gals it just will not cut it. Retailing at a whooping $47 here in Australia (lucky I bought mine for $30 on the US website) I suggest opting for the good ol' Rimmel Stay Matte Powder for $10 instead.
Have you tried the MAC Mineralize Skinfinish Naturals yet?