There are many leather products that include UV protection, from 303, Chemical Guys, Meguiar's, Leather Magic, etc.
Autogeek is one source: https://www.autogeek.net/leathercare.html
Detailed Image is another: https://www.detailedimage.com/Leather-C27/
CarPro makes a Cquartz leather coating that I'm happy with over the past 6 months: https://www.detailedimage.com/CarPro...1322/50-ml-S2/
I used it on the driver's seat bolsters, steering wheel & shift knob of my wife's F22. I haven't been able to train her to do it, but I turn my steering wheel upside down or throw a microfiber over it when parked.
I haven't found Leatherique to work well on BMW leather from E36s on - the color dye/finish is essentially sprayed on & doesn't "take" the conditioners like E23/28/30 seats do.
2006 330ci ZHP - Silbergrau Metallic / Stoff Laser/Anthrazit / Alu Black Cube trim / Adaptive Xenon headlights / HK hi-fi system / heated front seats