Can I Mix 20 And 30 Developer

When it comes to at-home hair coloring, we often have many questions. One common question is whether or not it’s okay to mix different levels of developers. Specifically 20 and 30 developers. Can I mix 20 and 30 developer? It might seem like a simple yes or no answer. but the truth is that there are a few factors to consider before mixing developers.

Can I Mix 20 And 30 Developer?

To fully understand whether or not you can mix 20 and 30 developer. it’s important to know what developers are. Are a crucial component in hair color products. They help the hair dye penetrate the hair shaft and create the desired color.

Developers come in different levels, typically 10, 20, 30, and 40. These numbers refer to the strength of the developer. Explore can I mix 20 and 30 developer? The higher the level of developer, the more lift and lightening it can provide. This is why developers are often referred to as “volume” or “strength”.

The short answer is yes, you can mix 20 and 30 developer. However, it’s important to understand the advantages and the disadvantages of doing so before mixing them.


Mixing 20 and 30 developer can give you more control over the lightening process. By combining the two, you can create a level of developer that falls between 20 and 30. This means that you can achieve a more specific level of lift and avoid going too light or too dark.

Another advantage is cost efficiency. If you have leftover developers in different levels. Mixing them can save you from having to purchase another bottle of developer for your next coloring session.

This can be really useful for people who don’t have a lot of money to spend.


While there are some advantages to mixing 20 and 30 developer. There are also some potential downsides. One major disadvantage is the unpredictability of the end result. Since you are combining two different levels of developers. It’s hard to determine exactly how much lift or lightening you will get. This can lead to uneven or unexpected results.

How To Mix 20 And 30 Developer

If you’ve decided that can I mix 20 and 30 developer, it’s important to know the proper way to do so. Here are some steps to follow:

  1. Determine your desired level of lift: Before mixing, decide how light you want your hair to be. This will help you determine the ratio of 20 and 30 developer needed.
  2. Calculate the ratio: The general rule of thumb is to use a 1:1 ratio of 20 and 30 developer. This means that for every one part of 20 developer, you should use one part of 30 developer.
  3. Mix thoroughly in a non-metallic bowl: Pour both developers into a non-metallic bowl. Mix them together until they are fully combined.
  4. Use immediately: Once mixed, the developer will begin to oxidize and lose its effectiveness. It’s important to use it right away for maximum results.

Safety Precautions

When working with hair color chemicals, it’s crucial to take proper safety precautions to protect yourself and your hair. Here are some tips to keep in mind that can I mix 20 and 30 developer:

  • To protect your hands from getting hurt by chemicals, it’s important to wear gloves.
  • Make sure you do your work in a place with lots of fresh air so you don’t breathe in any bad smells.
  • Do not mix developers in a metal bowl, as it can cause a chemical reaction.
  • Avoid getting the mixed developers on your skin, as it can cause irritation or burns.

Related Guides:

Can I Mix 20 And 30 Developer Together With Toner?

Can I Mix 20 And 30 Developer Together With Toner

Yes, you can mix 20 and 30 developer together with toner. In fact, many hair color products come with a toner that requires a specific level of developer to work properly. Just be sure to follow the instructions on the product for the best results.

Can I Mix 20 And 30 Developer On Dark Hair?

It is not recommended to mix 20 and 30 developer on dark hair, as it can cause uneven or unpredictable results. It’s best to stick with the recommended level of developer for your hair color product.

Can I Mix 20 And 30 Developer At Home?

Mixing developers at home should be done cautiously, as achieving the desired results and avoiding potential damage can be difficult. If you’re not confident in your skills or knowledge of hair coloring, it’s best to leave it to a professional.

What Happens If I Use 30 Developer Instead Of 20?

Using 30 developer instead of 20 can result in a higher level of lift and lightening. This could lead to your hair being lighter than desired or even damage it if left on for too long.

Is 20 Or 30 Developer Stronger?

In general, 30 developer is considered stronger than 20 developer because it has a higher level of peroxide. However, the strength of a developer is also affected by other factors such as processing time and hair type.

Final Thoughts:

While it is possible to mix 20 and 30 developers, there are both advantages and disadvantages to doing so. Can I mix 20 and 30 developer. It’s important to carefully consider your desired results. And take proper safety precautions before mixing these two levels of developers. 

If you’re unsure or inexperienced. It’s best to leave it to a professional hair colorist for the best and safest results. So, make sure to follow the guidelines mentioned in this article before trying to mix 20 and 30 developer on your own.



Meet Alex Mercer, the seasoned chemist with years of experience in formulating and testing various chemical combinations. Beyond his professional expertise, he has acquired substantial knowledge in home remedies and natural treatments through years of personal experiments and extensive research. His mission is to inform and educate readers about the best methods of combining different products, leveraging his unique blend of professional knowledge and home-grown wisdom.

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