I don't use this all the time as I find it a bit pricey for a mascara, but I do love it. Would give 5/5 if not for that.
I have pretty average lashes, not particularly long or thick but when I use high impact I certainly notice a difference compared to other brands. People actually comment on my lashes and think I have extensions, for this reason alone I love this product.
It's no harder to apply than any other mascara, the formula is a good consistency that goes on your lashes with ease. It's not too wet that it ends up all over my lids and not to dry that I have to put on 5 coats to notice it.
I always use 2 coats for extreme definition, but you can easily do one coat and still look stunning. The colour is an exceptionally black black, nothing wishy washy about it
I have skittish eyes after a childhood of eye drops, so applying mascara tends to be hazardous. This isn't too bad, though! I can remove any clumps pretty easily with a couple of strokes, and it dries quickly.
Unfortunately, this isn't remotely tear-proof. If I'm going to a sad movie I can't even think about wearing it - and it's currently my only mascara. Next time I'll try to find something more waterproof.