Any solution for loose skin issue causing bedsore type spot inside buttcheek.

Yes, it's hardly a pretty mental image, but it's gotten more and more irritating over time.

As I have lost 60+ lbs I have some loose skin on various areas, and being 67 years old does not help either, as your skin thins as you age. Just on the inside edge of my right buttcheek, there is an area that is apparently getting pinched or folded in some fashion when I sit down, and over time, this has become a sore area about the size of a quarter, with a rough surface texture that I assume is scabbing of some kind. It's quite irritating.

Short of not sitting down or skin surgery, is there a solution for this kind of thing? Ointments or lubricants? I have another 20+ lbs to lose, so I don't see the situation getting better by itself.