How to use Wella T18 toner with a 20-volume developer

before and after using wella toner

Are you one step away from using Wella T18 toner to get rid of those chicken yellow chunks in your hair?

Stop right now!

Because if you don’t use the correct developer, the magic of the toner won’t work.

And I know very well from experience.

Do you want me to tell you how I know?


 Because the first time I used WellaT18 toner, I used it with a 10-volume developer, and I didn’t get the results I had hoped for.  

I had bleached my hair and ended up with some horrible chicken yellow chunks that frankly scared me. More than scared me, they terrified me.


The truth is that going to a beauty salon was not in my plans, nor my budget. We all know that keeping your hair beautifully blonde and healthy takes out a big chunk of your salary.

So, that’s where I was, totally disappointed. But after watching more than 100 videos on YouTube, goodness, what people do to their hair!!, I had decided to apply a toner.

 But since I was afraid that using a 20-volume developer would fry my hair, I decided to use a 10-volume developer. 

Do you want to know what happened?


I’ll tell you.

And I’ll also tell you:

  • Why a 10-volume developer doesn’t work
  • How to use Wella T18 with a 20-volume toner
  • How to reduce the damage to your toned hair


Tabla de Contenidos


Why a 10-volume developer doesn’t work with Wella T18 toner

20 volume developer

Like I told you before, I decided to get rid of my chicken yellow chunks in my bleached hair with my own hands.

But even though I was very determined, the truth was I also was scared.

My hair already looked pretty fragile because of the chemicals that I used during the bleaching.

And now, more chemicals.


Don’t forget that the developer is a chemical that contains peroxide. It’s what is in charge of opening the cuticles so that the toner deposits the molecules of the color.

The peroxide or developer has two jobs in the toning process of your hair.

First, it reacts with melanin, breaking the pigments and lightening the color.


Second, it develops the oxidized dye molecules, which creates a protein structure in your hair.

It’s incredible what one learns when they have an objective in life!


 Going back to my hair, I decided to use a 10-volume developer with Wella T18.  

I mixed the toner and the developer in a proportion of 1 to 2, respectively.

I applied it patiently to my hair, leaving the roots for last because they always absorb the color faster.

After thirty minutes, I ran to rinse out my hair.


 The horrible chicken yellow was still there! 

And it was looking at me with a mocking smile saying, “You can’t against us.”

Damned yellow! Another one hundred hours watching videos on YouTube to see where I went wrong.


Then, I had two pieces of good news.

First, after seeing how people experimented with their hair doing unimaginable things, I still had hair.

The second, that I had to use a 20-volume developer.

 Because 10-volume developers aren’t strong enough to help the toner deposit the color.  

Eureka! I had it.


But to tone my hair, I had to wait at least a week. After all, I only wanted to get rid of the yellow pieces in my hair. I didn’t want to go bald.

Do you want to know what happened when I used the toner with a 20-volume developer?

A miracle definitely happened.


How to use Wella T18 with a 20-volume developer without damaging your hair

The difference between using a 20-volume developer was almost instantaneous after twenty minutes.

Those chicken yellow pieces of hair disappeared forever from my hair.

Well, actually, not forever. Because after a month, I had to tone my hair again.

But in the meantime, the triumph was mine.

And the toner mixed with the 20-volume developer had worked marvelously in my hair.


Now, it’s true that the second time I applied the toner, I changed a few steps.

Do you want to know what they are?

Take note.


First, I did a strand test.

I know. You’re going to tell me it’s a waste of time. That everywhere they recommend leaving it on for thirty minutes. That your neighbor left it on for forty minutes. Anyway, there are thousands of stories.

But the truth, the purest truth, is that everyone’s hair is different. Some are fine, others are thick, and others more porous.


So, the way that they react to the toner with a 20-volume developer is also different.

Anyway, do what you want. You can do the strand test or not. I think you should.

Because when I did the strand test, I discovered that for leaving on the toner with the 20-volume developer, twenty minutes was enough to get the results that I wanted.

Now you see. The strand test works to analyze how our hair responds to the different hair products we apply to.


One of the other things I changed was that I didn’t wash my hair with shampoo to get the toner out.

What I did was rinse it very, very well and after, applied a deep conditioner.

I noticed that this way, my hair looked and felt much smoother and healthier.


Now, I have the blonde hair that I had always wished for, thanks to using a toner with a 20-volume developer.

Of course, on the path that I had chosen, I had to intensify my hair care.

Don’t worry. I won’t tell you to go running out to buy an arsenal of products.

Do you want to know how I care for my toned hair?


How to reduce damage to toned hair

Remember that if you have used a toner on your hair, you’ve probably bleached your hair before.

And all of those products weaken your hair.


  • That’s why when I wash my hair, I apply the conditioner and detangle my hair using my fingers very, very carefully.

This prevents the hair from breaking and also will prevent hair loss.


  • Another thing to always keep in mind is I don’t rub my hair with a towel or twist it to dry it.

I gently hold the towel on sections of my hair and let it absorb the extra water.


  • Of course, I stay away from flat irons and hair dryers. So much heat dried out my hair and made it so that it didn’t look as shiny.


  • I also invested a bit of money into better-quality hair products, especially sulfate-free shampoos.


  • And lastly, once a week, generally on Sundays, which is synonymous with binge-watching a series, I apply coconut oil to my hair.

I let it sit for as long as I am in front of the computer watching my favorite series episodes.


Now you know which developer is best to use with T18 toner.

And you also know a few tricks so that your hair looks healthy, shiny, and beautiful after toning.


Do you have any doubts about the toner?

You can leave them here below, and it will be my pleasure to respond to them.

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