Sometimes work with bamboo hook not as smooth as steel.. So I try to make over it. I covered the hook with nail polish 3-4 times and let it dry for 1-2 days. After that you can see how smooth it is. And it also could make your bamboo hook looked trendy..:))
If you're boring with the colour, just take "Aceton" (nail polish cleaner). Clean up and add with another colour :)) Easy...isn't it ??