Hi, I've just dyed my hair from brown to blonde using a semi permanent hair dye, which had hydrogen peroxide in. What is the best way to reverse these effects? Thanks in advance
Umm, well, there's no way. There isn't such a thing as semi permanent blonde from a darker colour. Once colour is made lighter from a darker shade it's permanent. You now have to dye it to get it darker again.
What is your natural colour? Is it a warm or cool brown? How dark is it?
I'd say quite a light brown. So the only way to go back is to either grow it out or dye it..?
Yes, I'm afraid so.