Lighten your hair. Hair roots,

Collect as much information as possible about the hair dye you are going to use because they differ a lot in mixing ratio and the lightening effect of oxidizer. 

I do recommend the following hair dyes: Wella, Revlon, Matrix, L’oréal, Swarzkopf , they are the bests on the market.

Also take into consideration that the instructions apply to normal hair structure.

Before dyeing your hair, you must know a few things about your hair, like the absorbency of your