From my experience with Last for the past (approximately) 30 years, Last preservative does what it claims. I've got back up copies of many LP titles, purchased new (at the same time) and the ones treated with Last hold up better.
My understanding is that Last chemically changes the first few microns of the uppermost layer of the vinyl into a slippery composition similar to Teflon. The reduced friction accounts for less wear and improved high frequencies, which I always experience with LP's treated this way.
I currently have the Odyssey RCM, the German version of the Keith Monks having recently come from the VPI 17F.
I agree with Nietzschelover that after applying Last Preservative you should wash and rinse again. A large portion of my newest LP's have not gotten the Last treatment due to all the extra time it takes.
For what it's worth, both Michael Fremer and Larry Archibald claim to use Last on their own library.
My understanding is that Last chemically changes the first few microns of the uppermost layer of the vinyl into a slippery composition similar to Teflon. The reduced friction accounts for less wear and improved high frequencies, which I always experience with LP's treated this way.
I currently have the Odyssey RCM, the German version of the Keith Monks having recently come from the VPI 17F.
I agree with Nietzschelover that after applying Last Preservative you should wash and rinse again. A large portion of my newest LP's have not gotten the Last treatment due to all the extra time it takes.
For what it's worth, both Michael Fremer and Larry Archibald claim to use Last on their own library.