How to Fix Highlights that are Too Light (in 6 steps)

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Are your highlights too light?

Read More: how to fix highlights that are too light

Are your highlights too light?

Don’t worry.

I have a brilliant solution for your problem.

Darkening highlights that ended up too light is totally possible and I’ll tell you all about how to do it step-by-step here.

All you need to do is use a color palette, such as the one you can find at the grocery store.

Does that sound good?

Ready to darken those highlights?

Let’s get to it.

You should buy a color kit up to two shades darker than the shade you have in your highlights right now.

If you’re unsure about which shade of dye to choose, don’t worry. I’ll help you choose the best dye for your highlights shortly.

But, and here’s the important part, you won’t use the dye in the traditional way.

Because you’re not looking to dye your hair.

You’re just trying to darken your highlights.

So, instead of letting the dye sit for 30-40 minutes, you’ll only let it sit for 20 minutes.

That way you’ll darken your highlights without changing the technique.

Normally you dye your hair when it’s dry, but like I explained before, since you’re not trying to change your hair color, just darken it a few shades to make it seem less blonde, the process is different.

Usually when you dye your hair, you use 30-volume peroxide, which helps to ensure that your hair absorbs the dye correctly.

For this technique, you’re going to use 20-volume peroxide because you only want to darken your hair two shades from blonde and not change your entire hair color.

Okay, so now you know more or less what the technique is for darkening highlights that turned out too light.

Are you still with us?

Do you still want to darken your highlights?

Stay with me two more minutes because the best part is yet to come.

I’ll tell you step-by-step how to change light highlights to darker highlights.

A few warnings first.

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3 warnings before you darken your highlights(*6*)

fixing highlights

Before I tell you the step-by-step process, I want to give you a few warnings.

Dye takes approximately 3-4 washes or two weeks to settle in.

Before that time has gone by, your hair will still be letting out the dye that it isn’t able to absorb, so you won’t know what your final color will look like until that time has gone by.

It will become a disaster if you add more dye.

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Ask for help from a friend, cousin, sister or aunt, if you still don’t want to go to the salon.

It’s better to spend some time and money going to a good professional salon than to waste your hair’s health because you need to bleach and re-apply dye.

With those three warnings out of the way, we can get to the next step.

What color do you want your highlights to be?

What color dye to choose for your highlights(*6*)

use 20 volume peroxide

If it’s already been 15 days since you got the highlights and you’re sure that you want to darken them, then you should choose the blonde shade that you’re going to use to darken your highlights.

I insist, please, please, please don’t do anything to your hair until you’re 100% sure about which color you want for your highlights.

Many women come to the salon and sit in the chair without saying a word. They think hair stylists can read minds or have the power to guess what you want to do to your hair.

No, we can’t read minds. So, you should talk to your stylist and explain to them what you want.

Are your highlights too bright?

Do you want to darken them?

Good, then explain exactly that to your stylist.

Ask them to show you photos of the results after darkening your highlights.

If you decide to darken your highlights on your own at home, I’d recommend that you go to a specialized hair care store to buy the supplies. They’ll be able to help you decide what is best for your hair there.

That said, I do want to give you a few basic ideas of how to choose the right dye for your highlights.

Another thing to keep in mind when you’re darkening your highlights are grey hairs.

If you have a lot of grey hair, then I’d recommend keeping a shade lighter than light blonde (8). If you don’t, your grey hair will stand out more.

Highlights are the most-used technique for women with a lot of grey hair, since thanks to the blonde shades, the grey hairs are perfectly hidden.

You should return to the salon every 40 days to touch up your highlights, so that’s why if you have a lot of grey hair, I’d recommend not choosing a shade lighter than 8 to keep them hidden until your maintenance.

Now that you have a better idea of what color to choose for your highlights, it’s time to get the materials you need.


Like I said in the beginning, this is an affordable technique because it doesn’t require a lot of materials.

Once you’ve chosen the shade, you can go to the hair care store or pharmacy to get everything you need.

You can buy the kit dye, as long as you make sure that the peroxide it includes is 20-volume and no stronger.

Don’t apply anything stronger!

The materials can be purchased separately.

The dye tube and 20-volume peroxide.

Don’t forget latex gloves to apply the dye. If you apply the dye with your bare hands, they’ll be stained for days.

How to darken your highlights step-by-step(*6*)

Once you have everything you need, you should start to prepare your hair.

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Step 1

Brush your hair, completely detangling it. Make sure that there are no knots left.

Step 2

Dampen your hair.

Does it seem weird to apply dye to damp hair?

This technique is not the same as normal color application, just like I said at the beginning. Remember that we’re not looking to dye all of your hair, just darken the highlights. For this technique to work, you need to apply the mix to damp hair.

Step 3

Prepare the mixture.

Combine the entire tube dye and 20-Volume Peroxide in a container.

Mix the dye and 20-volume peroxide until it is well combined.

Step 4

Apply the dye to all of your hair from root to tips.

You can do it with a dye brush or with your hands like it’s a hair mask (with gloves on, of course).

Be very careful to apply it to all of your hair, don’t leave any part uncovered.

Step 5

Let the mix sit for 20 minutes.


If you want, you can check on the color every 5 minutes to see if your highlights’ color is changing how you expect it to.

Step 6

When the time is up, rinse with lukewarm water and wash your hair with your normal shampoo.

You can dry your hair with a blowdryer on medium heat. After drying, apply some anti-frizz spray.

That’s it! Your highlights are already darkened without having to further damage your hair in any extreme way.

5 keys for not ruining your highlights(*6*)

I want us to go over the key aspects for this technique to make sure your highlights end up looking perfect.

Remember that any error in your choosing of the materials or in during the application process could influence the results.

Here are the 5 keys for this technique

Don’t darken your hair more than two shades. If you do, you’ll lose the effect of your highlights.

If you use a higher volume peroxide, you’ll ruin your highlights.

It’s very important to wash your hair in the process because that is what cuts off the peroxide’s chemical reaction.

There you have it.

If you followed these steps correctly, your highlights that were too light should now be darker.

Do you agree? Have any questions?

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