u/InvestigatorFit4873

I recently dyed my hair a vibrant green and after only around two weeks it’s this gross faded yellow color (2nd image). I’ve frozen my ass every shower with cold water and limited washing my hair to like 2 or 3 times a week and I’m using a sulfate free shampoo which is what i was told to use. I still have the dye so I guess I’ll just dye my hair again, but I can’t just keep dying my hair every two weeks can I?? How do I stop the color from fading so fast?