Review (2/5): Makes hair greasy and unstyle-able, though bright colors
If you're looking to just color a 1" strip of hair and don't care if you can curl or straighten it, go for it. Otherwise, though these do deposit bright colors (unlike most chalks) and they do wash out very easily, you can't do anything with your hair after it has been put on, way too greasy/waxy. If looking to use on a wig or extensions, it does work, but again I wouldn't use my good curling iron on it for fear that it would get all that gunk on it, but I haven't tried.