Why can't you dye your hair after dying your hair with progressive dyes?

HELP!! i put 'sun in' in my hair unaware that it was a progressive dye and that i would be unable to dye my hair again. my hair was strawberry blond but the 'sun in' made it go more orange!! i wanted to dye my hair blonde at the hair dressers but the said because i used the 'sun in' i couldn't dye my hair. i waited awhile but still hated it so i just dyed it brown with semi dye at home. it worked so now that ive dyed on top of it and its grown out a few inches can i get it dyed at the hair dressers?? what will happen if i dye it??

Why can't you dye your hair after dying your hair with progressive dyes?

I personally have never dyed my hair but my friend does regularly. Once she dyed it multiple times within the same time frame and it turned a funky gray-blonde...

Probably isn't too healthy for your hair either.

Why can't you dye your hair after dying your hair with progressive dyes?

Sun-In has been around for ages and all it is is peroxide and water basically.

It bleaches your hair. It does not "dye" your hair. Peroxide (or bleach) removes pigment from your hair.

To simplify the chemical explanation, all hair has "undertones". Your natural hair color (the color you were born with) has an undertone of orange if that's what you ended up with when bleaching it.

Coloring hair ADDS pigment.

Two different processes.

By the way, "dye" is what is used in textiles. "Haircolor" is the proper terminology for anything with pigment in it that changes your hair color.

Whatever salan you went to, they were full of it and didn't know what they were talking about. Progressive dye?? WTF? OK forget what they said.

It's a bleach.

You can color over bleach but you have to know what you are doing and beware of breakdown of the integrity of your hair and that the color results will vary because of the previous bleaching.

Soooo, YES YOU CAN color (not dye) your roots. Go to a good stylist to get it done and tell them everything you've done to your hair. The more your stylist knows about what's in your hair, the better job they can do.

Good luck.