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Tuhis Beauty

Can I Put Red Hair Dye Over Blue? Everything You Need to Know

Changing your hair color can be a fun and exciting way to change your look. But what if you’ve dyed your hair blue and want to switch to red?

Can you put red hair dye over blue? The answer is more complex than yes or no, and there are some important things to consider before switching.

As a beautician, I’ve had many clients come to me with this question, and in this blog post, I’ll provide you with all the information you need to know before you make the change.

Understanding Color Theory

To understand whether you can put red hair dye over blue, it’s important to have a basic understanding of color theory.

When you mix colors, you can create new shades or change the existing color. For example, when you mix blue and yellow, you get green.

But when you mix blue and red, you get a different shade of purple. This is important because it means that the color you end up with will depend on the colors you’re starting with.

  • It can create a unique color: Dyeing red over blue can create a fun and eye-catching shade if you want a unique color.
  • It’s less damaging than bleach: If you’ve dyed your hair blue, you likely used bleach to lift your natural color. Bleach damages your hair, and dyed red over blue is less damaging than using bleach again.
  • The color may not turn out as expected: Because of color theory, the resulting color will depend on the shade of blue you’re starting with. If you’re looking for a specific shade of red, achieving it over certain shades of blue may be challenging.
  • It may damage your hair: While dyeing red over blue is less damaging than using bleach, it’s still a chemical process that can damage your hair. It’s important to take care of your hair before and after dyeing to minimize damage.

Tips for Dyeing Red Over Blue

  1. Consider the shade of blue: If your hair is a bright, vivid blue, it may be more difficult to dye red over it. If your hair is a more muted, pastel blue, it may be easier to achieve the desired shade of red.
  2. Use a color remover: Before dyeing your hair red, removing as much of the blue dye as possible is important. A color remover can help strip the blue dye from your hair, giving you a clean slate.
  3. Choose the right shade of red: If you want to achieve a specific shade of red, it’s important to choose the right dye. Talk to a beautician or research to find the best shade of red for your skin tone and hair type.
  4. Take care of your hair: Dyeing can be damaging, so it’s important to take care of your hair before and after the process. Use a deep conditioner to help repair any damage and avoid using heat styling tools for a few days after dyeing.


In conclusion, the answer to the question “can I put red hair dye over blue?” is yes, but it’s important to consider the pros and cons before making the switch.

Dyeing red over blue can create a unique and eye-catching color, but it may not turn out as expected, and it can be damaging to your hair.

Following the tips in this blog post, you can make an informed decision and achieve the desired results. Always consult a beautician if you need clarification on any step in the process.

Tuhis Beauty