Good replies -- I'm surprised at the interest.. But it is interesting to me obviously.
The stuff is really doing something,.. so I've left it alone. Going to remove it *tommorow. So it will get a good 24 hours of work time. Although tonight it will probably be sitting in 70 degree temps instead of 90. Thats ok though.
I didn't expect it to close cracks,.. but it has gapped some of the reaaally fine ones. The large ones are still there. Heh,.. I wasn't looking for a crease eliminator. I was looking for something to soften this leather up, a true conditioner.. (IE: Change the condition of in which the leather is in, change state).
It is doing that. Man, they are greasy.. lol. Its like a sweaty amazon in the car. The seats are literally sweating it looks like from the heat,.. but I like to do things all the way, so now I wonder if I've missed out by not covering them with plastic. Ah, oh well. I think I've done a pretty good job.
I don't want to get anyones hopes up with the after pictures, because frankly, I don't think the seats are going to LOOK that different from a camera. I think 90% of it is going to be in how they feel, know what I mean? That can't really be shown in a picture to well. So you'll have to take my word for it.
I can really start to see how proper and improper application of this makes or breaks the results.
If I rubbed it in, and left it in, say, 50 degree temperature for 8 hours.. I don't think it would do a whole heck of alot. A little, but not what its meant to do.
But keep it in higher humidity, and 90ish degree temps for as long as you can .. -- Thats the key. And, maybe, covering them gets an extra 25% effect out of it. I won't know this time.
I'm ready to clean it off! Heh.. I have other things to do to the car, but I'm not until this is done..
As for the skin irritant. It *can* irritate your skin, but I suspect you have to be susceptible to it. I had it on my hands and arms for over an hour and I haven't itched once. Bare handed, felt like I was molding clay or something while I was working

-- Now in your eyes wouldn't be good.. so don't rub the eye when applying hehe.
Gloves , like latex gloves would be fine I'm sure. Should probably be included in the kit.
I have the brush in mine, but I haven't used it yet, and I'm not even sure I'm going to use it on the clean up. I think a cotten towel and warm water will do the job to be honest.
To the quality of leather -- It is a 94, and was 62,000 in 1994. So I think the leather is likely to be of a 'decent' quality. Lets say higher than Ford or Chevy , but not as high as a 400,000 car

-- I don't know if its sealed, but it would appear that it is just by guessing. However I know it is getting through the seal in some fashion.. I suppose the seal is porous? No clue.. but you can see it going in and coming out -- I put a ton of it on there and I watched it be absorbed like it was a sponge in minutes. Its going somehwere -- Now it seems to be coming back out a bit, very odd.
The last thing, is I don't know how 'soft' this leather was new. I think the Lexus LS 400 had a somewhat 'tout' leather. A little stiffer than some other cars,.. a fine type of leather. The seats are very comfortable already,.. people always comment on that. I'm just doing it to do it hehe. Autopian right?