I bought this hair chalk from Dollarama. It was a premium item at $3. I thought it would be fun to put some colour in my head for Atomic Lollipop last weekend.
This is me before I did anything to my hair.
There are 3 colours and are literally like chalk you put on your head. The instructions also suggest that you brush your hair afterwards.
It was barely noticeable, and this was after I put a lot on. Any more and it would have looked like I had a clunk of something in my head.
Here’s after I combed it through a little. As you can see it’s not very effective on black hair (unless you possibly use a shit ton).
Anyways, would not buy this again and don’t really recommend it unless you have blonde hair.. but then you might as well just use regular chalk.
Tiana Feng 
Regular chalk pastel works fine in my blonde hair, but it really dries it out. Too bad about another Dollarama fail!