I’ve used Bare Escentuals “i.d. Weather Everything”, Benefit’s She Laq and Laura Geller liner sealer. All of them are adequate imo. Whenever I use shadow to line my upper and lower eye, I swipe it over the finished product. I never mix the shadow w/the product and then line my eyes. Because I like a soft line and I can’t seem to soften the line if I mix the product w/the shadow and then apply it. [or maybe it’s just that I lack the make-up skills to do the mixing]
But all in all I really love either of these products because it turns any of my shadows into long-lasting liners with no smudging; thereby preventing raccoon eyes! It is a must have for me!
Laura Geller is the cheapest, btw.