This will hold a curl in my stick-straight, downward-pointing Asian lashes, but did NOT curl them all by itself. At least it didn't take the curl out, no matter how many coats of primer and mascara I applied. It gave great volume when I wiggled it into the bases of my lashes, and gave very good length, too. It didn't seem to matter if I applied the 2nd coat immediately after the primer, or if I waited until the primer dried (there was 30 minutes in between primer and mascara, once)
IT SMUDGED TREMENDOUSLY by 4 hours!!!! In a related way, it was easy to remove with waterproof eye makeup remover. It seems, for me, that the easier a mascara is to remove, the easier it smudges under my eyes.
Why, oh why, can't a mascara give volume, curl, length and be waterproof, flakeproof and smudgeproof?