'Creaseless' eye shadows... Do they REALLY work?

Benefit Creaseless Cream Shadow/Liner - £14, 4.5g.

Creases = The reason I stopped using eyeshadows. There is nothing more heart braking than to spend ages applying, blending and layering eye shadows to only look in the mirror an hour later to see that all that work has turned into big creases across your eye lid. Bain. Of. My. Life.