I know the seats in my wife and I's cars have likely been ignored since day 1.  They're not abused and we don't have children, but the Mercedes is 16 years old, the Lexus 9.  We plan on keeping both until we cannot stand looking at them any longer, and interior condition is a HUGE part of making it feel 'right'.  I know for a fact, the second owner of the Mercedes, I'm #3, was both a slob and lazy about upkeep.  I've wiped the Lexus's interior down a couple of times with leather 'wipes', but I've never treated them properly.If you have one, you know leather vehicle interiors are not at all inexpensive to repair/replace, so it's in your best interest to keep them in good shape from the start rather than trying to save them as they deteriorate.Before diving in, first was a test on my wallet, which I've carried for 4+ years in a back pocket.  I have done positively nothing to as it pertains to leather care, other than I do my best to not let it get wet, i.e. drop it in the sink.Cleaning and Leather Honey...wow!  Just...WOW!After a thorough cleaning with Lexol, to get the dirt out of the leather, I brushed on some Leather Honey.  It has an odd feel to it...almost beeswaxy.  It's not at all oily or slippery, like it appears.  The next day, with my wallet feeling as if it were new...looks are another thing, but I don't care about look as much as feel...the cars were next.I read about people expecting Leather Honey to 'heal' cracks and restore color.  That's not what this is for, and it's not touted as such a product (which would be magic if it could, 'cause cracks are physical damage).  Now, had it changed my wallet's leather from the color black to say, fuschia, I'd have an issue.  This will not restore color to worn spots nor will it fix existing cracks.  That's what dyes and repair guys are for.The cars took some time, and I wish it were warmer so the Honey may be better absorbed into the leather, but I'll tell you what, the difference in feel is amazing.  The seats in my wife's 9 year old Lexus weren't this soft when the car was two years old!Now, be aware, this isn't a simple brush-on, wipe-off kinda thing.  You've *gotta* follow directions, and I think it's better to apply too little rather than too much, as you can't really recover excess.  If using a foam sponge as an applicator, you can squeeze excess out, however.Tips:  USE A LINT-FREE CLOTH!  Heed the advice on the bottle!  I thought the rag I was using wouldn't leave lint, but I'll be picking fuzz off the passenger's seat in my car for the next week.  Applying with a foam sponge is perfect.  Foam paintbrushes aren't sturdy enough, but the material is just right.  I think removing with heavy-duty paper towels may be the way to go, too.Get the 16 ounce bottle.  It has no expiration date, and after you use it on a couple of items, you'll be surprised how many leather goods you have which you want to bring back to feeling new.  I'm eyeballing our large L-shaped sofa, and while it'll be quite a bit of work, it'll be worth it.Make certain you remove the excess a couple of times.  I was tired and in a rush when I wiped down the 16 year old seats in my car, and I can see/feel I didn't remove all of the excess.  It takes some arm strength, 'cause this stuff is quite viscous.  My seats have a little bit of residue, but it's not oily, like I stated above, it's almost like wax.  This is 100% my error.  I should have taken more time.  The good, no GREAT, thing is, a light leftover residue doesn't appear to stain clothes.I parked my car in the sun, today, thinking maybe heat may help a bit of the excess soak into the leather.  We'll see.  In fact, I'll go check, now...Nope, sunlight/heat (at least a nice late-February day in north Texas) doesn't help.Let it soak in overnight, if possible.  You can't rush it.  Even with 16 year old car seats which have been in Texas their entire lives, a second coat is unnecessary.  I might put a second on my wallet's exterior, just to see if there's a noticeable difference.One other VERY important thing to remember.  If you like 'slippery' leather, DO NOT USE THIS.  It makes leather almost a bit 'tacky'.  At least initially.  After a few days of contact with clothes/skin, it feels pretty normal, but not dried-out and polished.