Originally Posted by Callisto

Unless you changed you don't personally overall do much on your vehicles and they are parked in a garage? Which is great but not conclusive with your result experience universally.

FACT: It is the long-term effect using questionable chemicals that are in cleaners and treatments that seem to be absent reported on the www. However if ones randomly picks a platform vehcle forum and search around to can find the effects of using the wrong products on various material.
And yes there is a correct and wrong choice regarding leather treatments and conditioners. Afterall it is biologic and not synthetic material. Think about the long-term effect what alcohol or other chemicals does if you applied them to your own skin?

Originally Posted by chickdr19

Sure man, you know exactly what I do with my vehicles based on what I have posted over the years.... My '21 CX-5 has 27k miles so it clearly isn't just "parked in a garage". My '20 Frontier has 33k miles....

I handwash ALL of my cars. They never get run through a carwash. Making statements such as above really say a lot about you as well.