What it is:A sheer nude eye shadow primer.What it does:Packaged in a new squeeze tube with a precise needle nose, Eyeshadow Primer Potion is an ultra-sheer, totally nude base that glides onto the skin. The original, award-winning formula disappears instantly and is the ultimate eye prep for smoother, more vibrant shadow and all-day wear with absolutely no creasing. What else you need to know:The squeeze tube version of this product is exclusive to Sephora for a limited time.