Have any ladies with African American hair dyed it with Garnier Nutrisse dye?

I am going from dark brown to auburn. I have a relaxer on my hair (its been a few weeks since last relaxer). The directions are kinda vague inside the box. Should I wash/condition it afterwards? Any other tips or advice?Have any ladies with African American hair dyed it with Garnier Nutrisse dye?
Wash Your Hair First! Condition Shampoo Ect.. Then Dye (If You Rly Find It Nessicary.) Then Greese %26amp; Make Sure Hair Is Moisterised.Have any ladies with African American hair dyed it with Garnier Nutrisse dye?
I recommend that you wash/condition first that way the dye will take better to just clean hair. I also recommend you ask a professional stylish before you use the product. Good luck and hope it turns out great.