My backseats are mint, I don't think they were ever used. I used 303 brand leather cleaner/conditioner on all of the leather surfaces of my LS. I like to use a detail brush to work it into the surface, and then wipe clean. Did the door cards, steering wheel, seats, and center console lid.

Your car looks great... keep up the good work!

U smoke in it?

If you want a great product for cleaning leather, leatherique is amazing. Highly recommend the combo kit.

I love this stuff and use it on my leather all the time.
https://www.amazon.com/gp/aw/d/B0002V9IFU/ref=mp_s_a_1_6?ie=UTF8&qid=1517621984&sr=8-6&pi=AC_SX236_SY340_FMwebp_QL65&keywords=meguiars+leather+conditioner&dpPl=1&dpID=41egTBJ8baL&ref=plSrch

I use the same stuff for all 3 of my vehicles with leather seats. Works great and lasts.

I consider this my favorite, been using it in my BMW since 2007, per the recommendation on the forum....smells good too

http://www.zainostore.com/product/Z-10.html

That was my initial reaction. Wax, leather cleaner, seal, baby. Then smoke in it. The car will never recover from that.

Yupp it puts a layer of tar over everything and the only way to remove that is to use a industrial sized steamer to steam the hell out of the interior glass included.

Great to hear especially for such a nice looking and well-kept LS. I commend you for not smoking in her as every smoker I know always bows to the nicotine craving no matter the time/place...and a beautiful car interior is usually not enough motivation to overcome the urge to fill their lungs with tar.
I'm particularity prejudice in this scenario because I previously had the opportunity to buy my wife's dream TigerEye SC430 Pebble Beach off a Lexus used lot... and after getting excited about the flawless exterior and looking inside at the apparent flawless interior, I opened the door. Mind you this Lexus dealer had the interior professionally steam-cleaned to specifically attempt to remove the cigarette smell...they failed miserably. Nothing....I mean nothing gets rid of the smell entirely... short of replacing every permeable surface in the interior, steaming the remaining metal/hard plastic parts, then installing a new interior.

It was a hot Dallas day and I didn't even have to get all the way into the car before that disgusting stench hit me in the face. It was really sad that this rare car had been destroyed by a careless smoker. As I was closing the door (I never even sat in it as I knew I would never buy it), the hapless sales guy finally made it to me out in the back corner of the lot. He said with smugness and the excitement of a potential easy sale: "Well, is this the car you're looking for?" I said it was, too bad the previous owner smoked in it.

He was quick to tell me then that it was professionally cleaned as they "noted" the smell of smoke when the took it in trade....LOL. I told him good luck selling it to anyone except a 30 year chain smoker who's completely nose blind. Anyway I digress.

Please continue to treat your beautiful LS right and keep any lit cigs completely away from her. Trust me, non-smokers will know...I guarantee it.