what to put on leather holster?

[old fart]

i have a duel carry 2 from desantis, it is not molded to my gun although desantis says in time that it will shape itself to the gun. they claim to never add anything to a holster but i can't see the leather never needing anything at all. do ya'll add anything on your holsters from time to time? i know i won't need to put much on and not too often but over time should i use anything and if so what? thanks

 

[AZ Husker]

Milt Sparks recommends Renaissance Wax. I've used it for years.