I do not use on leather or if I do it's sparingly, I use it where it gets dirty the most door seals & jams, I have floor mats so those get taken out and washed with soap and water and most of the interior gets done with baby wipes, glass with glass cleaner. I rarely clean the leather I did recently buy some zep leather cleaner that I am going to try soon.
i'll get the brand names for the professional stuff, you guys are just using the armature grade stuff i got connections, i can buy the Pro grade stuff... it's actually cheaper then buying the stuff from the retail store plus i get 10% off
this stuff works way better too as it's professional/commercial grade...
I can buy something that cost $10 and something that cost $100 and can't tell the difference, so I just keep my $90.00 in my pocket. 409 works magic for all kinds of stuff lots more than just my car. You might be surprised at how many products out there that are the exact same thing just a different label on it. It's simple market share strategy.