Maybelline Instant Age Rewind Protector Finishing Powder. Not only is it more affordable at $8, it also has a slight shimmer to it which makes your skin look luminous rather than the matte finish of the Mineral Sheer.
It contains gogi berry and also has an SPF of 25 which is impressive for a powder. It feels very silky on, applies really smoothly with a brush and in my opinion gives better finish and coverage than Mineral Sheers and most importantly...MSFN.
Not only is this a dupe, but I actually like it BETTER than both. Maybelline has been hitting them out of the park lately and this is no exception.