I used a regular ol' leather cleaner that I already had on hand, worked fine. Leather Care Spray, 35 Ounces - Griot's Garage
I cannot speak for others, but the one I linked to does not. I have used it since it came out. Before that I used their non spray able one and it too did not leave the seat greasy. After I spray it on and rub it in to help clean a bit I go back at the end and give a slight buff with a clean microfiber. Never left the seats greasy or slippery.
Alternatively you can also just use their interior cleaner. It won't condition at all but it works great not just on seats, leather or cloth, but can also be used on carpeting and other stuff around the house like Stains on clothes etc. it's a great product with no smell to it and no dyes. Interior Cleaner, 35 Ounces - Griot's Garage
First I vacuum it, give it a wipe with a damp microfiber cloth, and then immediately wipe it dry with another microfiber cloth. Keep in mind that some treatments and conditioners may contain agents that are potentially harmful to your vehicle’s interior.
Which is why SO many companies cover themselves by saying something like "test in a small inconspicuous area first". Lawyers, gotta love em' lol. I can safely say that the products I mentioned I have been using since 1999 in over 10 various makes and models of vehicles and never had a problem.
exactly how I do mine. Unless there is something really dirty and nasty, other products are not needed.
cool guys thanks for the input. i bought a small bottle of the spray. sounds like it will work well after a wipe down with a damp cloth