>>10942391there are some products on the market that slow down deterioration of PU before it gets to the peeling stage, but these just postpone the inevitable and they only work in some ways, for example deterioration due to sunlight. I don't know if there's any way to slow down moisture loss over time.
It's not a real solution but
>>10942362 could consider hunting for real leather bags. There aren't a lot of those so it's probably going to be expensive and time consuming to get one.
Another option could be to focus more on buying vinyl bags. "faux leather" for lolita bags is often PU, but sometimes it's vinyl (to be specific PVC) and afaik that doesn't peel. The problem is that a lot of brands don't say what they're using but instead just say "imitation leather" or "fake/faux leather" or "synthetic leather". Btssb store doesn't even mention it. AP just says "synthetic leather".
It isn't always obvious from stock photos what's being used specifically. Some older AP bags are pvc, I just don't know if they've been consistently using it for rereleases of popular bag designs.
It's also not a solution but it's cheaper to buy some bags from Loris (on taobao) and use those instead of brand bags. If they peel you've wasted 15$ instead of whatever you're paying for brand bags new or second hand.