What's the best thing to use to clean a real leather couch?

https://www.thespruce.com/best-way-to-clean-furniture-1391578

Good furniture stores sell leather creme that is specially formulated to not darken the leather. You can also order it on-line. Good luck.

Unfortunately your question cut off.

Here are some cleaning tips for leather furniture, hope they help. If the weren't what you were looking for please resubmit your question in full. ♥

https://www.bobvila.com/articles/how-to-clean-leather-furniture/#.WiqegEqnGM8

http://www.topcleaningsecrets.com/house/how-to-clean-a-leather-sofa-at-home.html

1 part woolite 9 parts water, soft bristle brush like those used for shoe shining and lots of rags.

Spray solution brush on circular motion wipe as you go.

This is how i clean my beige leather couch

Most saddle soap (used for horse tack) will not darken leather. Leather Therapy is a good one. Leather, however, will darken with age.

For scratches over the years I used shoe polish to match and buffed.

I have tried commercial cleaners but haven't been happy with the results. I read somewhere to use olive oil and if you want some kind of scent, you can add an essential oil. I've tried it and it does a great job without darkening the leather.

I used to have a burgundy leather sectional. I used the Cordova cans for mens shoes and wiped it on the scratches, let it dry and buffed it off. It never got on our clothes. I would test the black first. They sure look good for a few months after doing it.