To Clean Collars
Use saddle soap and Dubbin.
Saddle soap: Take a clean cloth, add just enough water to make it damp but not soaked, and rub it across the surface of the leather product. This is to remove any lingering dust or debris, which could otherwise affect the outcome of your saddle soap application. Once clean, you can then proceed to apply the saddle soap.
Apply a small amount of saddle soap to a second cleaning cloth, and then gently rub the cloth across the surface of the collar. The saddle soap should disappear as you rub it into the leather. Make clockwise rubbing motions until the saddle soap is no longer visible. Continue doing this until you’ve covered the entire surface of the collar. You can then rub over it one last time with a clean cloth to remove any excess saddle soap.
Dubbin: Dubbin helps to keep the collar soft and waterproof. Apply a small amount of dubbin to a cloth and rub evenly over leather. Rub it in well to ensure good penetration. Leave the collar to dry and then polish with a clean cloth.