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Have you ever thought about changing your hair color by layering one shade over another? 

Specifically, what happens if you decide to put blue hair dye over green hair? Let’s dive into this colorful adventure and see what we can discover.

The Science of Color Mixing

Putting blue dye over green hair isn’t as straightforward as painting a wall. Hair dyeing is more like an art, combined with a bit of science. 

Your hair already has a green pigment, and by adding blue, you’re essentially mixing these colors. Remember, mixing colors in hair dyeing doesn’t follow the same rules as mixing paint.

The outcome depends on several factors, like the shade of green you’re starting with and the type of blue dye you’re using. If your green is a light, minty shade, blue dye might give it a teal-like appearance. 

But if you’re starting with a darker green, adding blue could result in a deeper, more forest-like hue. It’s all about how these pigments interact with each other.

What Happens If I Put Blue Hair Dye Over Green Hair?

When you put blue hair dye over green hair, the result is typically a blend of the two colors, creating a new shade that can vary depending on several factors. Here’s a general idea of what to expect:

1. Light Green Starting Color: 

If your hair is a lighter shade of green, like a mint or seafoam green, adding blue dye over it often results in a teal or turquoise shade. This is because the light green mixes with the blue, creating a vibrant, oceanic hue.

2. Dark Green Starting Color: 

For darker green shades, like forest or emerald green, applying blue dye can lead to a deeper, more complex green-blue color. The richness of the dark green combined with blue might create a hue resembling deep sea green or a dark teal.

3. Factors Influencing the Outcome: 

The specific shades of green and blue, the type and quality of the dye (temporary, semi-permanent, permanent), and the health and porosity of your hair all play a role in the final color.

4. Variability and Unpredictability:

It’s important to note that hair dyeing, especially with unconventional colors, can be somewhat unpredictable. The end result might not always match your expectations, but often, this leads to unique and beautiful color combinations.

[Related: The Differences Between Dreads and Twists]

Consider the Dye Types

Not all hair dyes are created equal. Temporary dyes, for example, just coat the surface of your hair. 

They don’t usually blend colors as effectively as permanent or semi-permanent dyes, which penetrate the hair shaft. So, the type of blue dye you choose plays a big role in what your final color will look like.

If you opt for a semi-permanent blue dye, it will blend with the green to create a new shade. But with a temporary dye, you might just end up with a blue sheen over your green hair. 

Also, the quality and brand of dye can affect the outcome, so it’s worth doing a bit of research before making your choice.

The Importance of Hair Health

Your hair’s health and condition are crucial in determining the outcome of dyeing it blue over green. 

If your hair is damaged or overly porous, it might absorb the blue dye unevenly, leading to a patchy look. Healthy, well-maintained hair, however, is more likely to result in an even color.

Before you embark on your hair dyeing journey, consider giving your hair some TLC. A deep conditioning treatment or a trim to get rid of split ends can make a big difference. 

You want your hair to be in the best condition possible to take on a new color.

[Also read: What Does It Mean When a Woman Flips Her Hair?]

Expect the Unexpected

In the world of hair dye, sometimes you need to expect the unexpected. When applying blue dye over green, there’s always a chance you’ll get a surprise in terms of color. 

It might be a shade you didn’t anticipate, but that doesn’t mean it won’t look fabulous!

Embrace the possibility of a unique hair color. This is your chance to rock a look that’s entirely your own. And hey, if you’re not thrilled with the results, hair dye isn’t permanent. 

You can always try a different color later or visit a professional for a fix.

Aftercare is Key

Once you’ve dyed your hair, aftercare becomes crucial to maintain the vibrancy of your new color. 

Use shampoos and conditioners designed for color-treated hair to help preserve the blue and green hues. These products are usually gentler and help keep your color from fading too quickly.

Additionally, try to avoid washing your hair too often, as this can strip away color. When you do wash, use lukewarm water instead of hot. 

Hot water can open up the hair cuticles, causing the dye to wash out faster. With proper care, you can enjoy your unique new color for longer.


Dyeing your hair blue over green is an adventurous endeavor. The result can vary based on several factors like the initial green shade, the type of blue dye, and your hair’s health. 

While the process can be unpredictable, it’s also an opportunity to express yourself with a one-of-a-kind hair color. Remember to care for your hair before and after dyeing to ensure the best results. Happy coloring!

[Related: What It Means When A Girl Plays With Her Hair While Talking To A Guy]

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Anita Oge

Meet Anita, a relationship writer with a passion for helping people navigate the complexities of love and dating. With a background in information science, she has a wealth of knowledge and insight to share. Her writing is sure to leave you feeling empowered and inspired.

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