Apply a small amount of leather cleaner in a small patch of leather near the underside of the couch and wait for it to dry to make sure it leaves a desirable appearance.
Disassemble the furniture, if applicable, by removing cushions or other removable pieces.
Wet a microfiber cloth or the buffing or polishing accessory on a rotary tool with leather cleaner and rub it on the leather until it starts to foam.
Wipe off the cleaner with a dry microfiber cloth.
Apply leather conditioner with a damp microfiber cloth or with the buffing or polishing pad of a rotary tool. Rub the surface with a circular motion with the cloth, working the conditioner into the leather and wiping off any excess as you go. If using the rotary power tool, use a low speed and move the tip across the surface in multiple directions.
Allow the conditioner to absorb for a few hours before using furniture.
Thank you for the information. Can you recommend a cleaner as I was told that I should not use mink oil
Saddle soap to clean it. Leather conditioner to keep it soft and supple.
I've used these leather wipes weekly for years. https://www.amazon.com/Weiman-Leather-Wipes-Condition-Protection/dp/B00119XYFM