[MzzRach]

Hey there Audrey

This might be a bit tricky if you are not going to have this done in a salon. The main thing is your highlighted pieces which will "grab" the dye and potentially have you end up with a non-uniform look. One thing you can do to help with this is use a pre-colour filler on the highlighted pieces so they do not absorb as much of the colour when you are processing.

Have you considered starting the "transition to red" using a temporary glaze or colour mousse?

As far as home colouring products go, I love, love, love Loreal's Feria.

Good luck & feel free to PM me with Qs. I've been a redhead for years.