The dyes used in Polaroid prints are similar in nature to those used in Ilfochrome prints. The difference is that the rest of the chemicals are also present which may contribute to the longevity of the picture in an integral format.

So, I would guess that peel apart prints would last longer than integral prints, but that is just a guess. My boxes of both types of prints that have been around for nearly 20 years look just fine.

PE