[KNS]

Most new car leather these days is treated or coated leather. This is for stain resistance. It keeps the leather looking cleaner/nicer a little longer but it doesn't respond to traditional leather creams and conditioners.

Spill a little water on new leather seats and it beads up, the creams and conditioners that have been used for so long aren't really doing anything. What sucks about this new car leather is it doesn't breathe either, one of the best things about having leather in the first place.

Some premium brands (Porsche, etc) offer "natural" leather as an option that may not be treated/coated but it is usually a pricier option.

What I've been using on this new leather is 303 Protectant, it's for treated leather (look at the label on the 303 bottle), but don't use it on old style leather, of course.

If you purchased a car with leather seats in the last 5-10 years you've mostly likely got treated or coated leather.