I know you guys are trying to bait me. Want me to make a wise crack about borrowing or renting 'the missus'. Well, no way am I getting involved in this. Well, then again:
She's not for rent. She cleans my leathers and my leathers only. Gives my helmet a polish now and then too.
I use a product called Renapur which conditions the leather and adds a bit of waterproofing too. I apply it on the leather suit once a year and much more regularly on gloves. Got it years ago from motorcycle live and it’s still going.
I use nikwax leather cleaner, restorer & waterproofer products I started off with dubbin many years ago when nothing else was available for my leather hiking boots. While it keeps the leather soft and reasonable waterproof, with time it can harden, break up and collect muc (like chain wax/oil) unless you regularly clean and re-dubb. The leather can also get mouldy if not aired or used regularly. Obviously nothing can beat a dedicated wife