I received this in a mystery sample pack and am very pleased with it. A little bit goes a long way, this sample will last a long time. It's not as thick a formula as I'd expected, so it absorbs quickly and easily and actually feels like it's moisturizing my lids. Shadow and liner stayed in place all night with no creasing. Thanks Birchbox!

My eyeshadow stays in place all day when I use this primer. You only need to use a small amount on each lid. Even though the primer looks shiny when it comes out of the tube, it dries with a matte finish. The product is not oily or runny at all, and it is easy to apply eyeshadow over the primer.

I just did a day-long comparison between this product and my favorite shadow primer, Urban Decay's Primer Potion. It pales in comparison. Put a Lid On It is thin and shiny and hard to work with when applying on the lid. It isn't a matte finish, it is shiny and very viscous (liquidy). It dried as a thin layer on my eyelid that started creasing into the lines on my lid immediately. It leaves a sticky residue much like a thin gel face mask, but impossible to remove if it gets too far into the corner of your eye. It doesn't let the shadows blend well. Overall, I wanted to like it, but it doesn't even touch the one I already use.

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

I've tried so many different brands of primers, and they all result in my eyeshadow migrating to the crease of my eyelid. My oily eyes are such a bummer...I was really disappointed when I realized that this primer was so oily, but much to my amazement, it dried somewhat tacky and now my eye shadows are bright, bold, and long-lasting! They even last overnight while I sleep. I'm definitely adding the full-size product to my daily routine!