First off you do want to curl for the best performance. I find without curling that the application tends to be messy! So take a moment to curl your lashes so they are tilted up and outwards which in turns means easier application of Plump No Clump. Now you can proceed to layer up! Stroke this threw once or twice and you’ll get fairly dramatic results. Lots of length (which surprised me as typically mascaras are one trick ponies) and very nice volume and fullness. My lashes looked lush and very, very long!
Although not waterproof this wore well without making my lashes stiff or crunchy and it removed easily at the end of the night. I do have drier eyes and the wear was great without flaking or smearing!

Now it does hold curl well but doesn’t quite curl lashes itself. It does need a helping hand as I mentioned above. I find the formula clumpy if I apply it without first curling my lashes! So yes, it holds curl well but doesn’t quite work to curl lashes up and out.