I feel don't know if the white primer does anything at all to the lashes, but I really like the mascara. It works well and doesn't clump much. I will buy this again for sure.
I've seen so many people who love this, but I don't. It is annoying trying to get all the white lashes coated with the black side. It doen't even give me that fake lash look that I can get with some of other single wand mascaras. In attempt to thicken, I ended up smudging my lids, already done...