Propert's Leather & Saddle Soap works well for my year round topless style. Hardwork working it in but the leather is like a Ducks back afterwards (not greeny brown). A good half days job doing all the cockpit leather but it lasts the year.
Propert's has been bought out by Kiwi and they market it under the Meltonian brand Stateside, I have an old tin which will need renewing next year.