Fiebings Glycerine Saddle Soap Bar.
$23.95
The 100% glycerine bar restores leather to its full-bodied suppleness and buffs to a rich, satin finish. An excellent cleaner and preservative. Fair and Horse Show exhibitors often shampoo horses and cattle with glycerine bars to impart a healthy sheen to their coats.
Always spot test on an inconspicuous area of the boot to ensure you are happy with the final outcome.