Changing hair color is known as hair dying and hair coloring. Today it turns into a trend and blue color is in demand. You can change your hair color through cosmetics. You can change your black, grey, skin, white or brown color hairs into many other colors. You can also restore your natural hair color after dyeing your hair because some hair colors are temporary. Which hair colors claimed to be permanent actually are not permanent they stay last longer than average hair colors.
If you want to dye your hair blue then go to a cosmetic store and ask the shopkeeper to bring the best hair dye for you or if you don’t have time to visit a cosmetic store then go on the internet and search there for the best blue hair dye. According to a study survey of the University of Copenhagen that 75% of women and 10% of men of Copenhagen use hair colors. As far as home coloring concerns in the United States reached $1.9 billion in 2011 and now it’s 2021 just guess where it will reach now.
Mermaid hair color:
When you use blue hair dye on your hair, it turns your hair into blue color, and blue-hairs are also known as mermaid hair color. Its grace is different from the other colors because it’s a brighter color compared to others. For getting the thrilling blue color for your hair you have to invest a lot of time in it. No matter you color your hair at home or dye your hair from a salon. Because a lot of time-consuming between washing, bleaching, drying, coloring, after coloring again washing, again drying, styling, and possibly cutting for getting mermaid’s hair. Read more about 7 Tips for Caring for Hair Extensions.
Bleaching your hairs:
If you have dark hair color then bleaching is a way to give your hair a lighter color. Famous hairstylist Kiyah Wright says bleach destroys the moisture of hairs, which can cause serious damage to your hair. Bleach breaks down the Melanin which gives hair dark color. When bleach mix with ammonia to produce an alkaline solution that speeds up the reaction. So be prepared to save your hairs from damage and cut the ends, sometimes it is necessary to cut your hairs to prevent extreme damage on the ends hairs.
Minimize the damage:
Don’t change your mind about coloring your hair, because there is no problem that has no solution. By taking a few steps you can save your hairs from dryness and damage. There is a vast number of hair-saving products are available in the market so consult with your hairstylist and ask him/him to suggest you the best hair conditioner to prevent your hair damage and dryness. Apply those products according to the instruction written on the product or use them according to your colorist precautions. And one more thing before bleaching your hairs take the advice of your hairstylist maybe he/she will have a method to color your hair without bleaching, they know better than us that what’s right and what’s wrong hairs.
Maintain your hair color steps:
If you dye your hairs and you wished that the color stays last long, then follow these steps to maintain your hair color last longer, no matter in which color is your hairs are. You use blue hair dye or else hair dyes just follow these steps to prevent damage and maintain your hair color for a long time.
- Use color-protecting shampoos and conditioners
- Use sulfate-free shampoo
- Use leave-in treatments with UV absorbents
- Get deep-conditioning treatments to smooth and add luster
- Avoid chlorine
- Use heat protecting products before using styling appliances
Types of hair color:
There are four types of hair colorings that are famous, which are as follow;
- Permanent color
- Demi-permanent color
- Semi-permanent color
- Temporary color
Choose any type of color and get your favorite blue hair dye
How to Pick the Right Shade of Blue
Blue hair dye comes in many shades. Navy blue is dark and subtle. It suits people who want a quiet change. Electric blue is bright and bold. It stands out. Pastel blue is soft and light. It suits fair hair best. Think about your skin tone. Cool skin tones suit blue shades well. Warm skin tones can suit teal blue, which has green in it. Think about your hair colour now. Dark hair needs bleaching before the blue shows well. Light blonde hair takes blue dye fast. The colour will look brighter on light hair. Look at photos of the shade on hair like yours. Ask your hairstylist which shade will work best for you.
Do a Patch Test and a Strand Test First
Always do a patch test before you dye your hair. A patch test checks for an allergic reaction. Put a small amount of dye on the skin behind your ear or inside your elbow. Wait 48 hours. If the skin turns red, itchy, or swollen, do not use the dye. See a doctor if the reaction is strong. A strand test shows you the colour result. Apply the dye to a small hidden strand of hair. Wait the full time on the box. Rinse and dry it. Check the colour in daylight. If it looks wrong, you can change your plan before you dye all your hair. Never skip the patch test. Even a dye you used before can cause a reaction.
Blue Dye on Dark Hair: What to Expect
Blue dye on dark hair without bleach gives a subtle tint. You will see the blue in sunlight. Indoors, it may look almost black. For a vivid blue, you need to bleach first. Bleaching lightens hair in stages. Dark hair turns orange first. Then it turns yellow. Then it turns pale blonde. Each stage needs time. Do not rush it. Bleaching twice in one day can damage your hair badly. Wait at least a week between bleach sessions. Use a deep conditioner after each session. If you are unsure, go to a salon. A colourist can lift your hair safely. They know how far your hair can go without breaking.
How to Make Blue Hair Last Longer
Blue dye fades fast. Wash your hair less often. Two or three times a week is enough for most people. Use cold water. Hot water opens the hair and lets colour out. Use a sulfate-free shampoo made for coloured hair. Use dry shampoo between washes. Avoid chlorine. Chlorine strips colour fast. Wear a swim cap in pools. Protect your hair from the sun. UV light fades blue dye. Wear a hat or use a UV spray. Touch up your roots every four to six weeks. Use a semi-permanent blue dye for touch-ups. It is gentler than permanent dye. Keep a colour-depositing conditioner at home. It adds blue back each time you wash.
Frequently Asked Questions
What shade of blue should I choose?
Navy blue is dark and subtle. Electric blue is bright and bold. Pastel blue is soft and light. Cool skin tones suit blue well. Warm skin tones can suit teal blue. Dark hair needs bleaching before the blue shows well.
Why do I need a patch test?
A patch test checks for an allergic reaction. Put a small amount of dye behind your ear or inside your elbow. Wait 48 hours. If the skin turns red, itchy, or swollen, do not use the dye.
Will blue dye show on dark hair without bleach?
It gives a subtle tint that shows in sunlight. For a vivid blue, you need to bleach first. Bleaching lightens hair in stages, from orange to yellow to pale blonde.
How can I make blue hair last longer?
Wash less often with cold water. Use a sulfate-free shampoo for coloured hair. Avoid chlorine. Protect your hair from the sun. Touch up your roots every four to six weeks.
How long does blue hair dye last?
Semi-permanent blue dye usually lasts four to six weeks. It fades with each wash. Permanent blue dye lasts longer but still fades over time.
Disclaimer: This guide is for general information only. Always do a patch test 48 hours before you dye your hair. If you have a reaction, do not use the dye. If you are unsure, ask a professional hairstylist.
Last Updated: 6 November 2026