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How to Mix Bleach and Developer? [ Easy Guide ]

How to Mix Bleach and Developer
How to Mix Bleach and Developer

Are you impressed by the bleach blondes of your favorite celebrity on Instagram and want to style your hair like them? Do you want to apply bleaching on your hair to achieve the color you always wanted? Many people want to try bleaching at home, but most need to be made aware of how to mix bleach powder and developer in the right proportions.

This article thoroughly explains how to combine bleach powder and developer to achieve the desired color for a beautiful look. Whether you want to color the grey root sprouting out of your head or want to get those creamy blondes or balayage, bleaching is the ultimate solution to achieve the optimum and exact results.

Advantages of Bleaching at Home

foils on a girls hair
foils on a girl’s hair

Bleaching at home has a lot of benefits:

  • First, you don’t have to pay a hefty amount to take the services of a hairstylist.
  • Second, when doing hair bleach at home, you have more control over your hair strands. It gives you the freedom to choose the hair section you want to lighten through bleach application.

If you apply the bleaching process by taking all the measures, you will get the best results. But remember to take care of your hair locks after applying bleach.

Is it Safe to Bleach Your Hair at Home?

Although bleach is the optimum solution to achieve the desired hair color, this process brings a lot of damage to your hair. Too much bleaching can even cause damage to the scalp.

You should not use bleach frequently and take care of your hair to keep them healthy. The hydrogen peroxide in the developer makes the hair weaker and prone to frequent breakage.

Applying bleach the right way takes a lot of effort and years of experience, but if you have mastered the art of bleaching, you may prepare the bleach mixture at home. Make sure to apply bleach under the consultation of a friend or a family member who knows how to do bleach application.

While preparing bleach mixture at home is not only about taking the best-quality hair bleach and tools. The results depend greatly upon combining the bleach mixture and developer in the right amount.

What is the Difference Between Developer and Bleach Powder?

hair bleaching powder and hair developer
hair bleaching powder and hair developer

Bleach powder and developer work simultaneously; one is useless without the other. Whether you want to mix bleach and developer for black hair or trendy hair color, know that developer and bleach together will do wonders for you.

Let’s see what bleach powder and developer exactly are and how they differ in their functioning.

Bleach Powder

The hair bleach powder contains ammonia and hydrogen peroxide. It comes in blue or purple color hues. It works by extracting color pigment from the cuticle and lightening it so the hair color starts working on a plain hair base.

It is more powerful than a developer. So, you should not leave it long in your hair than the recommended time. For more information, read our article “How Long to Leave Bleach in Hair?


The developer is the liquid agent that contains hydrogen peroxide. It triggers the bleach powder and prepares it to lighten the hair.

Developers come in different volumes, such as 10, 20, 30, and 40 depending upon various shades. Choose the developer that has the most suited color lift.

Mix bleach and 10 volume developer to change the hair color by one shade. The developer of volume 40 makes the hair too brassy and is not recommended to use at home.

Difference Table

Contains hydrogen peroxideContains ammonia and hydrogen peroxide
Less powerfulMore powerful
Lighten the hair up to two levelsLighten the hair up to four or five levels

Things to Keep in Mind before Mixing Bleach Powder and Developer

mixing bleach powder and developer
mixing bleach powder and developer

Making bleaching mixture at home requires a lot of precision as any imbalance may impact the results.

  • Don’t forget to wear gloves before preparing the bleach mixture.
  • The ratio of developer to bleach should be 2:1.
  • Prepare an even mixture for a smooth application.
  • The developer of volume 40 is for salon use only, so, avoid using it at home.

How to Combine Bleach Powder and Developer?

mixing bleach powder and developer and a girl applying the mixture to her hair
mixing bleach powder and developer and a girl applying the mixture to her hair

Before you start preparing the mixture, make sure that you have the right tools and products available in advance, such as:

  • Bleaching powder
  • The developer of the required volume
  • Bowl to prepare the mixture
  • Hair-sectioning brush
  • Rubber gloves
  • Hair pins or clips


  • Take a plastic bowl and pour the required amount of bleaching powder into a small quantity of developer.
  • Blend them well.
  • Add some more developer and thoroughly mix it. Keep adding the developer and mix it till it reaches the required amount. 
  • The perfect ratio of preparing a bleaching mixture is two parts developer per one part bleach. The volume of developer does not affect this ratio, and it always stays the same.
  • It is suggested not to mix the required amount of developer and powder altogether since it won’t help you achieve a dense mixture.
  • The mixture should not look too much watery as it may cause your hair color to look uneven. The consistency should be runny for a smooth and quick application.  

Hair Application

  1. Before applying the bleach mixture to the hair, you should do a patch test. Apply a small amount of the mixture to a small area behind your ears. Wait for 24 hours, and the mixture is safe to apply to your hair if there is no skin reaction to the bleached patch.
  2. For an even application, make sections of your hair using hair clips.
  3. If you want to color your hair completely, use a stiffer brush. For highlights, use a softer application brush.
  4. To keep your bleached section separate from the unbleached section, surround it with the foil.
  5. The darker hair parts should be bleached first as they require more time to lighten.
  6. Leave your hair for 30 minutes. Keep checking your hair after every 5 minutes to see if the color is coming out perfectly.
  7. Once the desired color is achieved, wash the bleach content completely from the hair.

TA-DA! Your hairs are ready to see the magic of coloring after attaining those perfect lightened locks.

Frequently Asked Questions (FAQs)

What is the best volume developer for bleach?

The developer volume you choose entirely depends upon the shade you want for your hair. Volume 40 is for professional use only. Volume 30 is used if you want to change your hair color to 3 shades.

Which is the standard volume of developers?

The developer of volume 20 is usually considered standard as it perfectly lightens the hair color up to 2 shades.

What is the perfect ratio of developer to bleach powder?

The perfect ratio of developer to bleach powder is 2:1 (2 parts developer, 1 part bleach). At this ratio, the mixture gets the ideal consistency.

How often should bleach be applied to hair?

Bleaching harms the hairs, leaving them brittle, dry, and prone to frequent breakage. Avoid applying too many bleaching agents on the scalp and wait for at least 2 months or so to let your hair repair from the previous bleaching session.

Bottom Line

Preparing and performing hair bleach at home gives you more control over your hair. Still, at the same time, you need to follow certain precautions while you mix bleach powder and developer.

Carefully select the developer that you want to mix with the bleach powder. Do not go for too harsh volumes, such as 30 and 40, as the professionals usually use these at the salon.

Carefully prepare the bleach mixture, as any disproportion may produce undesired results. If you fail at first, don’t worry, as it takes time to master the art of bleaching at home.


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