I have some woodless colored pencils (Art Stix) and they have a waxy coating around them. This makes them hard to start using and to use them on their side like you would pastels.
For my woodless pencils, I can use a utility knife and shave it off. But the colored pencil sticks are too thin and lead to breaking, especially since some of them have started to bend.
How can I remove this protective coating without breaking or wasting my woodless colored pencils?