IMO, you just described the perfect use for a good Leather Balm. Why?
OK, since you asked- but it's a VERY long story
:
Long ago, Dad brought home a pair of on-sale stovepipe boots for me- remember the square toes, "stirrup straps", & heel almost tall as a cowboy boot, popular in the early 70's? Well, they fit perfectly, I really liked & wore 'em for several years. Fast forward to summer 1975- by then married, I even wore 'em to Willie Nelson's July 4th Picnic in Liberty Hill, TX. Walked in about 2-3 miles carrying an ice chest full of Coors on my shoulder
, in those boots. Can't believe I was able to do that without even thinking back then!
The boots were getting kinda sad before Willie's Picnic- and afterwards, the Central Texas black mud almost finished them. After sitting for a few weeks, the straps were so badly curled & cracked I cut 'em off. After brushing the too-well-dried mud off- several times, that blackland mud really sticks-there were so many long deep cracks in the as-stiff-as-a-board leather that I almost threw 'em away. Almost.
I bought a bottle of Cavalier brand(mfg by Kiwi) Leather Balm, sure that it was a waste of a perfectly good dollar. Wrong! It was almost miraculous- it not only made the leather clean & supple again, it actually seemed to make the cracks grow back together, with only a shallow line to show where a deep raw crack was before. Sounds crazy, but I swear it's true. I wore those boots for several more years after that.
Well, that sold me- ever since then, on the rare occasions when I want to preserve/maintain/clean leather, it's Cavalier Leather Balm. I still have most of the last bottle I bought years ago, recently used it on some old, irreplaceable George L. Herter knife sheaths with excellent results.
The bad news is that Cavalier seems to be dead as a brand name. The good news is that Kiwi still sells Leather Balm in a bottle, now under the brand name of- get ready- Meltonian!
You might find it just about anywhere shoe care products are sold. Oh yeah- There are other brands too, just google Leather Balm.
Edit- more bad news- these days, it's gonna cost more than a dollar!