I have had mine for a couple of months now and I wanted to give it this long to give a proper review on it.
Not a huge fan of the packaging, it's a little bit cheap and I had to poke holes in the plastic cover (the holes were already there but not punched all the way through). The lid sometimes won't screw on securely so I always store this product standing up. The brush it came with was terrible so I binned that.
Packaging aside, the powder itself is very very fine, and has a slight shimmer to it...DON'T LET THIS PUT YOU OFF! To use, I tap some into the lid and then use with my duo-fibre Real Techniques Contour brush. I find this works really well because it picks up the product with the long hairs and then is easy to blend with the shorter ones.
When I apply, I start from the very outside of my eyes (the highlight area), and pat it on slowly moving towards the inner corner of the eye. This moves AGAINST the lines under my eye instead of with them and makes the lines less visible.
This product not only sets my concealer and prevents it from creasing (ALL DAY), but it also gives me a very slight highlight under my eyes making me look fresh and awake.
This has very quickly become a holy grail product for me, although I applied a few different ways before I found one that looked flawless.
Absolutely love this product, it makes my under-eyes look brighter and sets my concealer really well without looking cakey & this may seem weird but i think it smells really good to its a faint smell not strong but i like it. There is little shimmery bits of glitter in it though but it usually doesn't show up on skin. all round love this product for setting under eye makeup definitely does its job :)
Tips: I think its a great product to not only set your under eyes but also the parts of your face you've highlighted like your T-zone :)