it usually just rubs off. Bur if that doesn't work it'll come out whenever you wash it.
There is acid in markers I believe... Which is a harmful chemicle. If you put it in your hair the acid in the marker would soak into your hair. Breaking at the hair. Very damaging.
Yes it will due your hair, depending on the color of the marker and of your hair. And also, for it to actually work, i recommand you to have your natural hair color
It gets Cleaned.
sometimes you might lose some of your hair!
Your hair starts smelling like chocolate.
it causes breakage.
it gets darker
It will become extremely sticky.
your hair will get darker just like it would do to your skin
It will turn your hair black red.
it's kind of when your hair is zig zaged, it happens i you put lots of small plats in your hair, or you can do it with a crimper
You will have very ugly hair...just saying