I use wax that matches the color of the shell. I use Alden paste wax (available in black, brown, color 8, tan) mostly because I already own them and they are cheap. Some people said that Alden wax are just rebranded Kiwi, not sure if that's true but I've never heard bad thing about Kiwi wax. Many have also commented that Saphir paste wax is superior... I have no experience with them. I guess I will give them a try in the (very distance) future when I use up my current stock.