I've been wanting to try The B's products after hearing such positive things; I went ahead and purchased the full size of this on a whim without sampling first. I'd recently been disappointed to realize that my HG noted primer was causing my left eye (yes, only the L!) to water continually, so I was unsure if this product had similar ingredients. Well I am pleased to report this primer stays on my lids all day, and even after 12 hrs., I can detect very little crease settling. I found it true that as other reviewers have noted, this product has a bit of a "greasy" feel upon application-- however, less is surely more, and it dries quickly for a smooth base. I apply this after my eye cream is absorbed, then follow up w cream or powder shadow, both of which wear extremely well under this primer. For the price, I am positive this will last a VERY long time, and I suspect, longer than other comparably sized products. Thank you to birchbox & The Balm-- can't wait to try more from this breakthrough brand! « less