How do you use Maji.Contrast Loreal hair dye?

My sisters friend gave her this bottle of Maji.Contrast from Loreal Professional.

Since it's professional do we need other chemicals with it, or what? Do we just add water, how much?

How do you use Maji.Contrast Loreal hair dye?

Go to http://www.lorealparisusa.com/ then click on the haircoloring icon at the bottom of the page. On the left it will give you all the different haircolor names. Click on one and find the icon for applying color. It gives you step by step instructions on how to color. Good luck!