As far as I know Idealist is the only non-acid exfoliating serum out there. SK-II claims that their pittera based products also speed up skin renewal and some people on make up alley swear by SK-II to make pores less noticable. If you don't mind a bit AHA's, then Natura Bisse, Juice, La prairie, Biologique recherche all have exfoliating serums in different concentrations.
I'm quite happily using Loreal's Derma Genesis Pore Minimising Serum at the moment. My skin doesn't tolerate anything richer than a serum, and this is one of the few products I can use daily. I've been to the Estee Lauder website and Idealist sounds quite similar, but better. [Sorry, can't add a hyperlink as I've not yet posted 15 times.]
Is anyone familiar with both Loreal Pore Minimiser and Idealist, and can tell me how they might differ?