Cleaning cd lens ?

I use alcohol but make sure you dry it off. You need little to no pressure.

Suggest you use pure acetone instead of rubbing or isopropyl alcohol because of this definition:

"Isopropyl Rubbing Alcohol, USP / B.P. contains 68-99% of isopropanol (isopropyl alcohol) by volume, the remainder consisting of water, with or without color additives, suitable stabilizers, and perfume oils."

You don't want "perfume and oils" so stick with pure acetone. You can find this very inexpensively at your local drugstore in the nail polish remover section.

I would not apply any liquid but use a can of compressed air and blow across not directly perpendicular. There is a very thin film that usually is a filter and protectant that you do not want to possibly deform or dent.