Apply a light coat of oil or leather conditioner every 6-12 months depending on the dryness of your climate.
Dryer climates require more frequent conditioning.
Note that depending on what kind of conditioner you use it may darken the leather to a varying degree.
Vegetable Tanned Leather
Occasionally we make a batch of products with Hermann Oak natural vegetable tanned leather. These items generally start out somewhat stiff, with a pale color.
With exposure to the sun and conditioning they'll take on a unique character and a golden brown color.
Some general suggestions:
1. If desired, set the item in direct sunlight for several hours to begin the darkening process.
2. Give your new leather a light coat of oil (neatsfoot oil or mink oil is best) to condition it.
3. Apply a leather wax every 5 years or so to help with water resistance and to give it a warm glow.
4. Continue to oil every six to twelve months or whenever it starts to feel dry.