Jwin ... both the Photo-Flo and the Joy are bad ideas. Soaps leave nasty residues that are very difficult to remove and which will attract dust and form a gum-like substance over time. The Photo-Flo will also leave a residue and a treble-eclipsing sonic signature.
Alcohol can be a good or bad idea--it depends on the alcohol. Either grain or isopropyl can be safe, but it's nearly impossible for regular folk to get grain alcohol which isn't charcoal filtered ... which loads the alcohol with hydrocarbons. This is great for taste, but not so for your vinyl.
Isopropyl is effective and safe, but only if it's prefume and moisturizer-free; you have to avoid isopropyl sold as "rubbing alcohol." Also, isopropyl less than 99+% may not have been diluted with ultrapure or even distilled water, and as Doug mentioned, tap water can permanently ruin LPs, depending on the mineral and calcium content.
Hope this helps.
Paul
