In CDs, the recorded layer is directly under the label, in DVDs it’s mid-way through the thickness of the disc so there’s a layer of plastic between it and the label. A function of different wavelengths of light used to read them.
Bit rot due to degradation of the organic chemicals in the recording layer is still very much a concern though.
DVDs didn’t have that issue, fortunately.
In CDs, the recorded layer is directly under the label, in DVDs it’s mid-way through the thickness of the disc so there’s a layer of plastic between it and the label. A function of different wavelengths of light used to read them.
Bit rot due to degradation of the organic chemicals in the recording layer is still very much a concern though.