The type of alcohol makes a difference.

Isoprophyl (70 percent ika 140 proof USA ) NOT for drinking, available at grocery/drug stores in the USA will leave a visable "white aftermath" on a clear sheet of glass.

ANY alcohol applied to a laquered disk will distroy the recording. (old time shelaque was created from crushed bugs infused into spirits...and for a "French finish" rubbed hot, with linseed oil).