Ok, a little back story.

Right now, my hair is dyed medium brown with dark blonde high lights. I naturally have dark brown hair with a lot of red tones in it.

I want to dye my hair an all over red color, similar to mahogany (not shocking red, more reddish brown with very rich tones), similar to this box dye


However, I know from perusing blogs everyone says you get the best results if you go to a store like Sally Beauty and purchase dye/developer there, but I am so overwhelmed by the choices/fillers/add-ons, I was wondering if anyone had any kernels of wisdom to share?

Thank you much!
Went CG x2 before, didn't work

Now trying modified CG, starting 4.9.11

Not sure what hair type, 2c/3a...hopefully a pattern will emerge soon!