Can the hairdresser dye my hair even though i have already dyed it ??

Of course.Can the hairdresser dye my hair even though i have already dyed it ??
it depends on how long ago youve dyed it if its been atleast 3 weeks itll be okay you dont want to go like right after uve done it urself itll cause chemical problems and fry your hair if its an emergency they may be able to strip the old dye out and start completely over but that is only if there are no alternatives try a color glaze to hide dye imperfections atleast for a few weeksCan the hairdresser dye my hair even though i have already dyed it ??
If you have dyed your hair at least three weeks or more she should be able to do that but if it is less she wil have to strip the old color out first, if she don't you might come up with a color you don't really want