Midnight Brown is perfect for very dark brunette but I find the crayon too waxy for my very shiny hair as it won't stay on easily and it is difficult to avoid it looking obvious close to my parting.
I bought this lipstick shaped crayon to cover gray roots between colorings. It made my hair greasy/clumped looking and since the medium brown skews red, it made my scalp look inflamed. Paid about 7 dollars on Amazon and used it twice.
Then I thought to use it on a couple scratches in my hardwood floor and it's ok for that, oddly enough. So rather than the trashcan, this product has been repurposed to my toolkit.