Faded tan leather Hotter slouch boots. Old but favourite

That's worth trying.

I had a lovely pair of half-length Clark's boots, the leather was fine but the soles just split right across.
The local cobbler had a go at mending them but they didn't last even one winter

I did type calf-length but autocorrect didn't like it.

I think they will be fine, HelterSkelter. I was told years ago by a man in a leather goods shop that he could sell me a tub of expensive leather cream or I could go to Boots and buy a tub of Nivea for a tenth of the price and it would do the same job. Leather is just skin, and skin cream will nourish it (as, I feel sure, will olive oil).

I've had similar success with using small amounts of olive oil rubbed into the arms of my leather chair. As you say, it initially slightly darkens it but, as the oil is absorbed, that fades, leaving the leather more supple.

I can recommend Renapur, should you want a more specialized product,

Well I have now oiled the other boot. And they look fine. I may give them a quick polish with some polish and a cloth. They will outlive me!!

Georgesgran

I can recommend Renapur, should you want a more specialized product,

Agree with this. It’s a fantastic product and leaves my handbags, boots and leather sofa looking great.

I've had a tin of dubbin for years. My leather boots get a bit of a rub a couple of times a season, and it keeps them in good shape.

I get great satisfaction from polishing up my sons' work boots.

I haven't heard the term dubbin for about 50 years. It's sold on the internet in quite a large tub an well reviewed. I may invest in a tub for other shoes. Thank you CanadianGran for reminding me.