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How Long Does Blue Hair Dye Last?

How Long Does Blue Hair Dye Last?

Dyeing your hair seems fun, but it could be also challenging. You’re probably here because you wanted to try cool colors on your look by having blue hair, or maybe you did it already – just thinking how long your cherished look will last. 

Unnatural colors will not stay in your hair forever. If you dye your hair with semi-permanent dye, it will only last for 5 to 7 washes. That’s why the quality of hair products you use and how frequently you wash your locks are important.

What Color Does Blue Hair Fade To?

It will eventually turn into a greenish hue. This is because the only way for you to successfully get blue hair is to have a light hair color such as blonde.

In color theory, mixing the yellowish base with blue dye will result in a green hue. As your dye fades with washing, it will eventually reveal the natural yellowish tone on your hair.

Also, Read Best Blue Hair Dyes

Does Blue Hair Dye Fade Fast?

Yes, it fades fast. Even with the use of hair color-protecting products, the dye won’t last longer than you wish it would. It could end up being teal-colored to a lighter shade of green you can think of.

Depending also on how you care for your hair, you can get a cool faded color or it’ll look like you just bleached your hair randomly.

How Do You Make Blue Hair Dye Last Longer?

First things first: Get your hair bleached by a professional

It is important to remember that having damaged hair won’t let the color stay in your hair. Some people try to bleach their hair on their own and ended up having damaged hair.

Better safe than sorry. The hair professionals know your hair condition better and how the bleaching process will go accordingly.

Don’t wash your hair regularly

If you want to make the vibrant blue color last longer, you’ll need to skip daily washing sessions. You can use dry shampoo to make your hair look presentable.

Remember not to get your hair wet. You can wash your hair every 3 to 5 days. In that way, the pigmentation will last in your hair longer.

Avoid being exposed to heat

Are blow dryers, curling irons, and straighteners part of your daily routine? Then you got to skip using those tools as heat will strip the dye faster.

Just let your hair dry naturally. Oh, not to mention the heat of the sun. The damage it could cause in your skin is the same as the damage it will do on your hair. 

Rinse your hair using cold water

Using cold water when you rinse your hair will help to retain the color. This is because the coldness of water will close your hair cuticle and lock the dye before it escapes.

So when you go to the shower to wash your hair, turn the temperature of the water as low as you can take in a minute. You can do it!

Dye your hair regularly

Change is inevitable, and it is the same as the fading of your hair color. You’ll need to dye your hair every 3 or 4 weeks, depending on your exposure to the sun and water. You can mix shampoo or conditioner when you re-dye so your blue hair will stay shiny and fresh.


Also Read: How Long Does Hair Have To Be To Dye It Blue

Remember: Only use a sulfate-free shampoo

Sulfates are surfactants, or detergents, used for shampoos and conditioners to remove oil and dirt on your hair, and yes, they can also strip out the pigment. If you want to protect your hair color, you MUST only use sulfate-free products.

Use shampoo with the same hue as your hair

Using blue depositing shampoo will help to prevent the color to fade fast. If you use it every time you wash, you can achieve a bit darker hue or you can use it depends on your hair color. There’s just a reminder for you: Don’t leave the shampoo too long on your hair as it could cause damage and frizziness.

Be wise in choosing your products

There are hair colorants that are designated for a certain shampoo and conditioner. You shouldn’t use the same shampoo you have before once you dye your hair in a different color. You wouldn’t want to make a mistake. Check the contents of the product and make sure it is suitable for your blue hair.

What Color Hair Dye Lasts The Longest?

Brown dyes definitely last the longest. Since brown is one of the two most common natural hair colors in the world, it stays on your hair much longer than other hair dyes such as the vibrant ones.

The duration of the dye before it fades still depends on how you take care of your hair, but with darker tones, the damage could be less in every re-dyeing than those with bright hues.

Can Blue Hair Dye Be Permanent?

No. Unfortunately, there’s no permanent blue colorant out there. Bright colors such as blue are made to be temporary and not forever.

It will fade no matter what. There’s no product yet that has pigments that are enough to penetrate your hair while keeping the vivid color alive for a longer time.

Also Read: Best Color to Dye Over Blue Hair

Related Questions

What to do when the blue dye starts to fade already?

You’ll have to redo your dyeing routines. Since blue only comes with semi-permanent dye, you can use other shades of blue or stick to your desired blue color.

You can also try to experiment with other colors that aren’t much lighter than your current hair tone. You should also remember your growing roots.

  • If you want to keep your roots light, you’ll have to bleach the new roots, and re-dye it.
  • If you want to make it darker, you’ll just need to dye it again with blue.
  • If you want to do something new, you can just redo your hair color from roots to tips and make a change of style.

When re-dyeing your roots, it is important to match the color with the rest of your locks. You can decide to have a navy or midnight blue that looks good with dark roots. Nevertheless, keep in mind that you have to be sure when you dye your hair all over again.

Can I dye my hair blue without the need to bleach it?

If you’re just trying to have a darker tone, then you can dye it without bleaching. The only thing is your hair will just be darker in color, but the blue won’t come out that much. You’ll need to bleach your hair at least 1-3 levels lighter or just go blonde for the dyeing to be successful.


Saturday 28th of August 2021

I have had my hair dyed 10 months ago. I had a blue strand in my blond natural hair. I swim at least 7 times a week and I wash it at least 2 to 3 times a week. It has faded a bit and it has grown out, but it is still blue and its still very visible. Is this because my hair is perfect for dying or something? Or is it something else. Cause I read everywhere that blue hairdye won't last that long without re-dying it...

Irina Tracy

Monday 30th of August 2021

hi, there! While that is impressive nevertheless, your blue strand might have been well-maintained by the pool water that contains chloride too. Also, the fact that you don't dye your hair very often helps too since the first dye usually lasts longer. And last but not least, the blue strand was most likely protected by the rest of your hair too. There are many factors that contribute to a long-lasting blue hair color. Thank you for your comment!