DO BUY IF: you want shine free skin, want a powder that lasts, like the smell of peaches
DON'T BUY IF: you want something to use on the go, want a scent-free product, want pressed powder
WOULD I RECOMMEND?: yes

I have used this both on bare skin and over foundation. Over bare skin, it gives a subtle blurring effect - my pores appear less obvious and my face doesn't go shiny like it normally would. Over foundation, it gives a smooth, poreless finish and also protection against shine. I applied my makeup, including foundation, setting spray and this powder at 8:30am on a day with 30C heat and the shine was only just beginning at 8, much longer than I was expecting based on my old maybelline powder. It doesn't dry out my skin and leaves a matte finish even over bb cream/dewy foundation. I haven't noticed a white cast, but I'm very pale so it's hard to say if there is one.
The scent is quite strong but I don't mind it - it's the traditional artificial peaches scent but done well, so it isn't overpowering to me. The main problem I find is that it can be a bit hard to get an even coating onto the puff, as the holes in the plastic barrier that separates the puff from the powder mean that you often get the same pattern of holes in powder on the puff. I also wouldn't want to use it on the go in case of spillages. Overall though, it's very good quality and the best powder I've ever used.

Pros:
-Adorable, light peachy scent
-Hides my E N O R M O U S pores, particularly on my nose
-Controls my oil
-Easy to dust off
-Puff is so soft
-Super finely milled
-Doesn't dry me out
-So easy to apply! You don't like the puff? You can just brush it on!
-Non-irritant
-Sets my make up like a dreaaam
-Super cute packaging??? It's sat on my vanity like "Oh, hey girl, jus' me"

Cons:
-It did get slightly caught on the flaky skin on my nose, but I hadn't done any skincare/priming so that's most likely why. You would need to prime well before powder anyway.
-Probs not best on dry skin. I'm combination, so I used it on my oily zones and then VERY lightly dusted it over my drier areas
-Does leave a little white cast, but that can be brushed away or misted away

Overall:
I despise powders as a general rule, but I love this, it's just peachy!! Definitely recommend! <3

Much cheaper than the innisfree oil control powder and way more bang for your buck. Although heavy application can give you a pale, white cast, it does exactly what it is supposed to do. Keeps my face relatively shine free for the whole day and smells lovely! The peachy packaging is adorable and the puff has a great peachy scent.