I'm looking for some tips on leather conditioning/restoration. I bought some used leather Recaros from an SVT Focus donor. Overall they are in great shape, but have some minor cracking on the driver's seat bolsters. I'd like to condition the seats to prevent any further cracking, and also hide any current cracks. I'm not looking to just shine, but properly condition the leather. I've been doing a lot of reading, but I'd like to hear what products you all use, how often you use it, what not​ to use, etc.
Thanks for any advice.