I actually like the look of a matte white in the inner corners, but it's not going to give you that romantic/ pretty look if thats what you are looking for. It's actually more of a contemporary look that you would see on runways. So, if you are feeling edgy go ahead and try the stark white on the inner corners. It's a fun way to play around with a dramatic eye. But for basic highlighting that most of us do, a matte white will be a bit too much especially for daylight. Depending on your skintone a shimmery white can be very pretty on the inner corners and actually look quite festive. I usually stick to shimmering champagnes and creams for the inner corner highlight. You can see celebrities such as the Kardashian sisters sporting this exaggerated shimmery inner corners. It is also a great trick to use if you have eyes that are close together, a smokey eye might close them in a bit and using this technique is a great way to open up your eye area. Let me send you a list of a few shadows I use in the inner corner for highlighting. My favorite one is Mac's Retrospeck. Gorg!
1. MAC Naked Pigment
2. Stila's Kitten Eyeshadow
3. NYC Sparkle Dust in Champagne ( Drugstore)
4. MAC's Retrospeck Eyeshadow
5. Lancome's Stiletto Eyeshadow ( It's a shimmery cool color that looks rock and roll in the inner corners)
6. Urban Decay's SideCar