Best LP cleaner fluid for fingerprints

Don't know about "best". Home brew 7:1 distilled water:IPA has been working for me. (recommended by others here on A'gon w/the addition of a small amount of surfactant which I omit). I apply with "lintless" makeup remover pads (buy a stack of 50 or 100 in a sleeve from the cosmetic section at the grocery store....very soft). Follow up by vacuuming off with a RCM. The water/IPA solution is in contact with the record surface only 1 min or so before vacuuming. Then clean again with "proprietary" record cleaning fluid (still using KAB's that came with the EV-1 machine)applied via LAST-type brush. Vacuum off again. Finger prints do go away. The IPA - even diluted - is a decent solvent for oils.

"IPA is a lousy solvent for grease and oils."

Audiofeil - you're kidding right? I have to beg to differ. The topic was cleaning fingerprints off a hard surface, not laundering clothes. IPA is widely used in industry as a solvent for a range of organics and as a degreaser and cleaner (e.g., for optics). One of the concerns using it on LPs (as I'm sure you're aware)is leaching out plasticizers and other additives (hence the 7:1 dilution and comment about limited time on the vinyl surface).

To Rushton, Dougdeacon and others - wasn't claiming dilute IPA is the best but it is certainly cost-effective and as such is an economical first step for removing heavy soiling and conserving more expensive proprietary products. BTW - once I get through the KAB solution I'm using as a 2nd step, I'll begin using the AI products I purchased.

Audiofeil - Let's stay focused on the original statements. My initial response had to do with removing skin oils (fingerprints) from hard surfaces. I work in the chemical industry and have for over 25 years. I'm aware of the difference between an organic solvent and a surface active agent. Google IPA uses. Degreasing is listed along with the other purposes I mentioned. Are there better hydrocarbon solvents? Yup - but IPA has a relatively benign profile compared to things like hexane or dimethylformamide. It gets grease splatter off our glass top cook range, fingerprints off my eyeglasses etc. As a microscopist, alcohol was regularly used to clean immersion oil off lenses. In any case, we can agree to disagree. Use what works for you. [by the way, - what do you like?]and enjoy the music! Peace.