Back in the 1980s I called the LAST company and to my great surprise was put through to the chemist who formulated the stuff. I wanted to know if record cleaning fluid would remove his product. He said that the only thing that would take it off a record was a nasty industrial solvent unavailable to consumers. On the other hand, Duane Goldman, the creator of the Disc Doctor line, told me that his cleaner absolutely will remove Last record preservative. Until an audiophile chemist tests both claims (paging Myles Astor!) there's no definitive answer.
LAST record preservative
I have noticed a slight reduction in highs after applying LAST record preservative. However, if I use Disc Doctor record cleaner after applying LAST preservative the highes seem to return to normal. Does the preservation effect if LAST still work if I use the Disc Doctor solution after the LAST solution has totally dried? I listen to my LP's daily and don't want them to wear out too fast if possible! All of my LP's are cleaned on a VPI 16.5 with Disc Doctor Miracle wash prior to play back or treatment with LAST preservative. Thanks for any advice, or feedback!