What happens if you put blonde dye on red hair? Will it lighten the color?

with orange highlights

  • If you use blonde dye on red hair, your hair will turn orange.
  • When you use blonde dye on a color as persistent as red, all you’ll end up doing is modifying the color, not lightening it.

Now, why do you want to use blonde dye on your red hair?


I can only think of one reason: you want lighter red hair.

If that’s what you’re looking for, you won’t achieve it by using blonde dye on your hair.

 You’ll need to apply the red-colored dye you want, or do a light bleaching session, then use lighter red dye on your hair.  


Red is an exceptional color, and everyone goes through a phase where they fall in love with some shade of red.

But if you want to change colors, then you need to know that red is a tough color to work with.

What do I mean by that?


 You can’t just use any color dye on red and hope that your hair will change to that color. 

For example:

If you have brown hair and use blonde dye on your hair, then your hair will end up light brown.

That’s easy to follow, but it’s different with red.


You might end up with a true disaster if you use blonde dye on your red hair.

Your roots would probably end up carrot orange, and the rest of your hair would change into an ugly reddish color.

That’s because blonde dyes use a 30 volume developer, so not only will they change your hair color, but they will also lighten your hair.


 My advice is that if you want to lighten your red hair, go to a salon where a professional hair colorist will help you and take care of the whole process, leaving your hair perfect. 

If you don’t want to go to a salon, you can do it at home if you’re very careful and follow all directions in the guide I give you to a T.

So, let’s get started!


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Everything you need to know about red dyes

pre pigment hair

Red is a special color, and it gives a lot of personality to any woman that wears it in their hair.


Every brand has its own palette and numbering system for red dyes, which is why there seem to be infinite combinations of red.

The numbers range from deep red 3.5 to strawberry red 9.5. As you’ll see, there are enough options that you’ll be able to pick whichever color you like.

  • If you want a darker red, 3.5 or 4.5 would be for you.
  • If you want a medium red, 5.5 or 6.5 are best for your case.
  • If you want a lighter red, 7.5, 8.5, or 8.5 are a good fit.


As you can see, their names are slightly different from the way other colors are named light brown 6 or light blonde 9.

That’s because every brand gives its red colors their names.

That’s how come you can find dyes with names like passion red, cupid red, poison red, etc.

So, to find the best red for you, I’d recommend going to a haircare store and taking a look at all the different color kits they have.

That way, you’ll know which of the colors you want.


Don’t freak out if you see dyes with numbers like 6.75, 6.67, or 8.65; those are combinations of colors and tones that brands develop to give their line even more variety.

So now you know, you can find just about any color you want in the palette of reds.


How to correctly lighten hair dyed red

If you’re looking to lighten your red color, you only have two options that will work:

  • Use a lighter red dye
  • Bleach your hair and use a lighter red dye on top

The two options might sound the same to you, but they’re not. And now you’ll see why not.


When should you bleach your hair to use a light red dye?

You’ll need to bleach your hair when the difference between the red you have in your hair and the red you’re looking for is greater than two shades.

For example:

If you have a 5.6 dye in your hair and you want to use a 9.6, you’re going to have to bleach your hair.

Do you know why?


It’s easy; you’ll always need to bleach your hair to lighten it in more than two shades.

There are four shades of difference between 5.6 and 9.6, so you’ll need to lighten your hair by bleaching it.

If you bleach your hair, then it will lighten 2-3 shades.

Then, you’ll be able to use a 9.6 on it with no problem.


 Then you’ll have the color you’re looking for without haven’t to do something strange like use blonde dye on your red hair. 


In what cases you shouldn’t bleach your hair?

When the difference between your current color and your desired color is less than two shades, then you don’t need to bleach your hair.

Most dye uses a 20 volume developer, which is an ideal amount to lighten your hair a few shades gradually.

For example:

  • If your hair is dyed a 6.6 and you want to use an 8.6, then you can go ahead and use that dye on your hair as is.
  • If your hair is dyed a 3.5 and you want to use a 4.6 on it, you can also use it without needing to do any extra steps.


Now you know in which cases you’ll need to bleach your hair and in which you won’t.



You shouldn’t use blonde dye to lighten red hair; instead, you should use a dye in the color you want.

Depending on what color that dye is, you may or may not need to bleach your hair.


Remember that if you bleach your hair, you should use a 20 volume developer, nothing stronger.

Bleaching your hair is a chemical process that can damage your hair, so if you’re not 100% sure how to do it, then I’d recommend seeing a professional.

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