The exact bleach to developer ratio is always 1 to 2

  • The right bleach to developer ratio is 1:2
  • That is, for each part of bleach, you should use two parts of developer.
  • This ratio must always be respected to get a bleaching mixture with a creamy consistency that is easy to work on the hair and prevents some areas of the hair from being stained.


to apply to her roots

YOU MAY ALSO BE INTERESTED IN: How much 30 volume developer should I mix with bleach?


In these times, when do-it-yourself is in increasing demand thanks to influencers and Instagrammers, the bleach to developer ratio is a hot topic.

Can you believe that I am asked about the developer and bleach ratio in one out of every ten Whatsapps I receive?

That’s why I said to myself, “Alejandra, since it’s such a frequent and popular question, why not write a blog post so that no one else has any doubts?”


And here I am, writing to you. To you, with the bleach and the developer in your hands. I know you don´t know where to start.

Sure, watching videos on YouTube made everything seem easy, like “one plus one is two,” and that’s it. But all that glitters is not gold.


 The proportions of peroxide and bleach to prepare a good bleach mixture is one of the most important steps for a successful hair lightening. 


Do you know why?

  • Because if the bleaching mixture is too liquid, you added too much developer. Therefore, it will quickly run through your hair, come in contact with the skin on your face, and irritate it.
  • If the bleach mixture gets too thick, you’ve put too much bleach in, and when you apply it to your hair, you risk bleaching it unevenly.


That is why it is crucial to prepare bleach with the right bleach and developer ratio. Today I´ll tell you:

  • Exact bleach and developer ratios to prepare the bleach mixture
  • What type of bleach and developer you should use according to your hair

Tabla de Contenidos


Exact bleach and developer ratios to prepare the bleach mixture

dyed hair brown

The most important thing for your mixture to be perfect is that you respect the ratios, meaning:


  • For every 25 grams of bleach, 50 grams of developer
  • For every 10 grams of bleach, 20 grams of developer


You must be very accurate with this,   take your time and always use a measuring container to make precise balances.  Later on, I´ll tell you how to prepare your own measuring container.


  • If you add extra bleach into the mixture because you think it´ll make your hair lighter, the consistency will be too thick, and you´ll have a hard time integrating the components, as small lumps of bleach will form

When you apply that lumpy mixture to your hair, you won’t properly distribute it, and your hair will be stained with little dots. A real mess.

Do you know what the solution is to repair stained hair?


To bleach your hair again!

However, after that, it´ll take months for you to get your hair back in shape.


  • If the bleaching mixture becomes too liquid, things don’t get better because it will run down the hair, even bleaching sections you didn’t want to bleach, and irritate the skin on your face, neck, etc. shoulders.

That is why you must respect the ratios so that your bleaching does not become a real nightmare.


How can you make sure you´re using the exact ratios?

developer and bleaching powder

With plastic measuring tools.

You can use the soap measuring spoon for clothing or pastry measuring spoons.

If neither of these options is available, you can make your own spoon to measure the bleach and developer ratios. What will you need?


Just a plastic bottle!

  • Cut the top of a plastic bottle and discard the rest.
  • Wash it thoroughly, dry it well and make a mark on it at the desired height.
  • Keep the plastic container to prepare the bleach mixture handy.
  • Place the bleach inside the top of the bottle up to the mark you made and, once the top is full, remove the lid on the plastic container you separated to make the mixture.
  • Rinse. Then, put the lid on and place the developer inside your measuring container to the mark and remove the lid on the plastic container where you previously placed the bleach. Do this twice. Remember that the ratio is always 1 to 2: one part of bleach to two parts of the developer.


Now tell me, are you sure that the bleach you have in your hand is the right one for your hair? Oh, didn’t you know that there are different types of developer and bleach?

Don’t worry, now you’ll know because that’s what I’m going to talk about next.


What kind of bleach and what kind of developer should I use?

There are many bleach and developer options on the market. Let’s see which one is the best for your hair.


  • Bleach, blue or white?

Is your hair between medium and blonde colors? You should then choose white bleach, as it’s very rare for these base colors to have unwanted orange tones.

If your hair is dark or very dark, you should use blue bleach because it neutralizes any orange colors that may appear after bleaching.


  • Developer, liquid or cream?

As you can see, there are two types of developers. In this case, you won´t differentiate them by color but by consistency.

The liquid developer, popularly known as hydrogen peroxide, is the most corrosive type of developer. Due to its liquid consistency, when you mix it with the bleach, it won´t provide any hydration to your hair.

 That’s why you shouldn’t use the liquid developer to bleach your hair, as it will dry it out and make it look dull. 


To avoid that, there are cream developers that are also used for bleaching.

Their creamy consistency protects the hair during the process, and you can even choose those containing aloe vera or essential oils.



You should always prepare the bleaching mixture in the exact proportion, which is exactly one part of bleach to two parts of the developer.

If the mixture becomes too liquid or too thick, you risk staining your hair or irritating your skin.

If you want to protect your hair even more during the process, add 10 or 15 drops of coconut oil to the bleach because it will hydrate the hair fiber without interfering with the bleaching process.

Deja Tu Comentario