It's not bad per say. IPA tends to be grabby and will marr/scratch soft paint when wiping off. Eraser helps with lubrication, but glass wow is the best I've used.
From the above article: "(The Chemists) recommendation was for approximately a 10% dilution of IPA to water solution. The reason for this recommendation besides their chemistry background, is that a strong solution of IPA can stain and even soften some clear coat paints."
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