Why?... because of the intensity of colour and saturation. I have tried cheaper brands and they don't work as well. I promised some recent trunk show attendees that I would post what I use please see photos and links to acquire these below.
See a previous blog post here about how to use the above crayons.
If you are wondering what I am doing about my "Ombre" project , please don't worry it is a "WIP" right now ... work in progress!
Happy Tuesday! Enjoy the Sunshine!! ??