What happens when you put blonde hair dye over red hair dye?

It might lighten a little bit, But don't expect it to be some drastic change.

You can always go darker with hair color, but never lighter.

It depends on how bleached your hair is really. If its a kind of dirty blond- then you'll get a darker red colour. If it is very blond- like almost white blond- your hair will turn out a very bright, vibrant red. The exact colour shown on the box, most likely! And the colour will last longer too! People who wish to dye their hair a colour like red, and want it to come out a strong colour are recommended to bleach it first. If you do want it to be very bright, then you will want your hair to be the brightest blond colour possible, so you should avoid using brown hair dye at all costs; If you use it before hand, bleaching it will turn it orange, not blond! And if you dye it brown after bleaching, it will just ruin all your hard work because it usually takes a while for dark colours like brown to wash out!

Absolutely nothing. The only way to lift color is with bleach, blonde dye will not do anything to it.

you get orange with blonde over red or red over blonde, occasionally purple.

brown over red at most would cover completely, or possibly give you an auburn color

I was born with blonde hair so i think we look fine thats the way i actually was born

You get orange hair

ive done blonde over red and got strawberry blonde, and another time got an orange color.

not a very nice colour

you wont know unless you try

ORANGE.