I really wanted to love this mascara, but it's one of the worst for longevity--starts smudging after about five hours. I use a primer and still, the mascara didn't go the distance. I won't buy it again, even though it looks great until it smudges.
I tried this by YSL recommendation because YSL discontinued my all time favorite mascara Baby Doll, which had the best brush. Will not be buying this again. I have to scrape the brush so much before applying or it will clump and it never seems to really dry completely. It's actually ADDED time to my make up routine. Two stars because after all the scraping excess off work, it does lengthen. Bring back Baby Doll!