I'd say this product does somewhat what it says. Doesn't work miracles but keeps my mascara on my lashes, helps add volume and length. It's kinda odd in a way as it's white, but this way I know that I've fully coated all my lashes. Then when I add my mascara, again when all the white disappears I know all my lashes are fully coated. Now I knew this was a great primer because Light Camera Lashes doesn't stay on my lashes at all. Give it a few hours and it's all over the place, this is the only one that does that. Anyway, with this primer it actually stays put!! So to me this is a win win!