Id recommend using demi-permanent hair color. Although its not as safe to use as semi-permanent, it is much better than using permanent since it does not contain any ammonia.

The only catch is that you cant go lighter, only darker with demi-permanent hair color. I recommend wella demi permanent hair color!!

Good luck!
cat...im a kitty cat...and i dance dance dance
2B/2C hair!

Shampoo: GTTT, SheaMoisture
Condish Tresemme naturals, GFTN
DT: Lustrasilk + honey
LI: KCKT, GVP CB
Styling products: Ouidad CC, TIGI Catwalk, KCCC, PaulMitchell Sculpting Foam
Oils: Coconut