Blundstone Renovating Creme.
Much like a skin moisturizer, renovating cream nourishes and conditions the leather of your boots, preventing them from drying out. Use it often in the early stages of wearing your boots to assist in maintaining the leather and the colour of your boots for longer.
Conditioning your boots regularly will prolong their life, and also prolong that happy 'new boot' feeling you get when you wear them!
 

Always test the product in an inconspicuous area as it may change the appearance of certain leathers.