Problem is, label and data layer are only separated by thin lacquer on CDs, as I noted in other comment. I am not sure if alcohol also damaged that layer since this was just short-term exposure, but it at least made it more vulnerable. If it did damage the protective layer, then the reflective layer will be allowed to oxidize which will ruin the disc.
That is why you shouldn’t use permanent markers on CDs. The ink will leech through the label and protective layer over time. They are too thin.
![[Rant] I am too dumb to be left alive. I just tried to clean a CD with Isopropyl Alcohol...](https://i.imgur.com/OrXJoDC.jpg){kind=link}
That looks like marker ink too, I’m wondering if they only just wiped off a sharpie label on an old writable CD?
Nope. This one: https://www.discogs.com/release/317952-Alphaville-First-Harvest-1984-92
Problem is, label and data layer are only separated by thin lacquer on CDs, as I noted in other comment. I am not sure if alcohol also damaged that layer since this was just short-term exposure, but it at least made it more vulnerable. If it did damage the protective layer, then the reflective layer will be allowed to oxidize which will ruin the disc.
That is why you shouldn’t use permanent markers on CDs. The ink will leech through the label and protective layer over time. They are too thin.