The one I hav been using is actually a smaller size included in one of Laura Mercier’s gift sets or travel kits (can’t remember), but it was 0.33 oz., whereas the full-size version (which is pictured in this post) is a full 1 oz. It took me six months of regular usage to go through it, so I imagine a full-size should last at least a year with daily use or a year and a half with 3-4 uses a week. I just picked up the full-size during Sephora’s F&F sale last month.
I love it because it sets my makeup, keeps it in place throughout the day, and helps minimize oiliness. It never looks powdery, and it never looks obvious–it has a silky smooth texture as it is a finely milled loose powder that disappears on the skin. The soft, featherweight texture means it never feels heavy over foundation. I like using this with MAC’s 134 brush and dusting all over after finishing foundation and blush.
The only area this product could improve on is working longer than six hours – I do find a hint of oiliness starts to peek through by hour seven or eight, and I’m normal-to-dry, so I imagine that very oily skin types may find they need a touch-up after three or so hours.
P.S. — I recommend only peeling back (or cutting) half of the label, because you don’t need that many holes exposed to get a good amount of product.