I figured this one out a couple weeks ago — it’s really nifty! When you line on top of shadow with a black gel or cream liner (I used my Blacktrack, hence the title) it sometimes actually alters the colour of the shadow… check out the example below.I was in disbelief for a few moments (it’s so different! And pretty! So… blue!) and thus made sure multiple times this wasn’t some epic screw-up. When I swatched it to show you guys, I wiped off the liner before dipping in with a clean brush… and yup, it definitely does change the colour of the shadow! (Okay, okay, maybe it isn’t THAT different. But you have to admit, it is a pretty big change, especially as you’d expect no change at all.)

‘Kay, one more time: here’s a close-up. (Can you tell that I am absolutely MESMERIZED by this??! Yah, pretty much.)Just a nifty little trick that I thought I’d let you guys know about. Lesson: layer shadow under your black gel liners for a cool effect, or ensure that they’re going on shadowless skin if you want it super-black.

(The shadow used in this is Senna Fantasy, one of my favourite shades. It’s gorgeous and versitile, not to mention ridiculously vibrant for such a light colour.)