It depends what colour and chemical history your hair has been through already. If colouring it brown was the first time you have done anything to it, then yes it will be fine to get blonde hilights afterwards (though they may come out brassy, you might need to have them gone over twice). But if you have coloured your hair before you should talk to your hairdresser and have him/her do a strand test to see if your hair can take it.
you should give your hair a couple days to rest in between - a week or so would be even better. putting so many harsh chemicals in your hair so close together can cause a lot of damage. oh, and be sure to use a deep conditioner between dyes so your hair stays hydrated and not dried out and straw-like.
If dyed my hair quite a bit , i hope it works ! Ill tell the hairdresser I just dyed it the night before and she can do the strand test . Thanks for the answer :)
Dont listen to what others say you should do. Do you! Just like she said make sure to give your hair a break. But do you!
i think so, i dyed my hair ALL Black last week, and dyed it all red yesterday.
its absolutely fine you do what yiou want to