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If you’re a brunette dreaming of having raven, sultry locks, you’re in luck! Unlike many hair transformations, dying your hair from brown to black is a pretty straightforward process. Because you are adding color to your hair rather than lifting it, there is a reduced chance of damaging your hair or getting ending up with a strange color. However, that doesn’t mean you should wing it! There are a few pointers for dying, maintaining, and adjusting to the perfect black hair that you want.

Part 1
Part 1 of 2:

Using Hair Dye

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  1. How.com.vn English: Step 1 Purchase a box of hair dye.
    You can find black dye at your local pharmacy or your beauty supply store. Luckily, there is only one shade of true black, so you won’t waste too much time perusing different shades! The hair dye will come with everything you need to dye your hair from brown to black.
  2. How.com.vn English: Step 2 Change into an old t-shirt and put towels down.
    Just like the black dye will dye your hair, it will also dye your carpet and clothing. To avoid ruining your favorite clothing, put on an old t-shirt before you begin. Then, put old towels over your shoulders, on the counter, on the floor, and anywhere else you could possibly get dye![1]
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  3. How.com.vn English: Step 3 Mix up your dye.
    Put on a pair of plastic gloves, which will come in the box of hair dye. In a tub, mix up the developer and the dye with the provided dye brush. Make sure you stir everything together thoroughly so that the dye and developer are thoroughly blended.
  4. How.com.vn English: Step 4 Apply petroleum jelly to the skin closest to your hairline.
    The downside about applying black dye to your hair is that it easily stains the skin. Instead of hurting your skin scrubbing the black stains, protect your skin by applying a layer of Vaseline or other petroleum jelly around your hairline. This will create a barrier between the dye and your skin, and you can simply wipe away the jelly once you’re finished.[2]
  5. How.com.vn English: Step 5 Begin applying the dye to your hair.
    Use the provided brush to put the dye on your hair. Then, use your gloved fingers to massage the dye into your hair. By using your hands, you can make sure that your hair is evenly coated and saturated. Do this for your entire head, from roots to tip. The beauty of black hair dye is that you aren’t in a rush to apply it and you can take your time to do it right. After all, the end result can’t get any darker![3]
    • You can use hair clips to section out your hair and work layer by layer, or you can apply the dye to your entire head of hair at once. It’s up to you and it depends on how much hair you have! Just make sure every piece is coated.
  6. How.com.vn English: Step 6 Let the dye sit on your hair.
    After you’ve covered every piece, let it soak into your hair. The box you purchased will have specific instructions. If you’re going to move around, clip it up or put it in a bun. This will help keep you from getting black dye all over everything while you wait![4]
  7. How.com.vn English: Step 7 Wash out the dye.
    Once your dye is done processing, it’s time to rinse. Use cool water to rinse your hair while massaging it, just like you would with shampoo. Keep rinsing it until the water runs completely clear – this can take awhile! Once you’re sure all the dye is out, give your hair a little TLC and condition it. Shampoo can strip out some of the dye, but conditioner will not.
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Part 2
Part 2 of 2:

Maintaining Your Black Hair

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  1. How.com.vn English: Step 1 Limit your washes.
    Every time you wash your hair, you will rinse a bit of the dye out. In order to keep your hair as black as you want it, try not to wash it more than you absolutely need to. Clip up your hair or cover it with a shower cap when you shower, and use combat grease in between washes.[5]
    EXPERT TIP
    How.com.vn English: Michael Van den Abbeel

    Michael Van den Abbeel

    Professional Hair Stylist
    Michael Van den Abbeel is a Professional Hair Stylist and the Owner of Mosaic Hair Studio and Blowout Bar in Orlando, Florida. He has been cutting, styling, and coloring hair for over 17 years. Michael loves showing his clients how to wash and wear their hair easily and effortlessly. Mosaic Hair Studio and Blowout Bar is recognized as a Diamond Top Tier level Wella salon.
    How.com.vn English: Michael Van den Abbeel
    Michael Van den Abbeel
    Professional Hair Stylist

    Opt for a shampoo that's made for color-treated hair. Michael Van den Abbeel, the owner of Mosaic Hair Studio, says: "When you dye your hair darker, it's a more gentle process on your hair, but you still want to use a mild shampoo so you don't wash out your new color."

  2. How.com.vn English: Step 2 Rinse your hair with cold water.
    When you do have to wash your hair, use cold water. It might sound unpleasant, but it will help your color last longer. Hot water will cause the cuticle of the hair to open, which is where the black pigment is. In other words, hot water will make your hair actually release the dye. By using cold water, the cuticle of your hair will stay sealed and hold onto the black dye.[6]
  3. How.com.vn English: Step 3 Re-dye your hair when the color starts fading.
    Inevitably, your black hair will start to fade and your roots will begin to grow out. When you notice this happening, it’s time to repeat the process! Grab another box of black hair dye and give your color a boost. To maintain a dark black, you will need to re-dye your hair every couple of weeks.
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Expert Q&A

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  • Question
    Is it bad to dye hair black?
    How.com.vn English: Michael Van den Abbeel
    Michael Van den Abbeel
    Professional Hair Stylist
    Michael Van den Abbeel is a Professional Hair Stylist and the Owner of Mosaic Hair Studio and Blowout Bar in Orlando, Florida. He has been cutting, styling, and coloring hair for over 17 years. Michael loves showing his clients how to wash and wear their hair easily and effortlessly. Mosaic Hair Studio and Blowout Bar is recognized as a Diamond Top Tier level Wella salon.
    How.com.vn English: Michael Van den Abbeel
    Professional Hair Stylist
    Expert Answer
    Going darker doesn't really damage the hair. You can use a really gentle catalyst when you're dyeing hair a darker color, which is why it isn't as damaging as going lighter.
  • Question
    Will my hair ever return to its original color?
    How.com.vn English: Community Answer
    Community Answer
    Yes. Any hair that grows in after you dye your hair will be the original color.
  • Question
    If my hair is brown do I need to bleach my hair first, or can I just dye it?
    How.com.vn English: Community Answer
    Community Answer
    You can just dye it without bleaching.
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      About This Article

      How.com.vn English: Michael Van den Abbeel
      Co-authored by:
      Professional Hair Stylist
      This article was co-authored by Michael Van den Abbeel. Michael Van den Abbeel is a Professional Hair Stylist and the Owner of Mosaic Hair Studio and Blowout Bar in Orlando, Florida. He has been cutting, styling, and coloring hair for over 17 years. Michael loves showing his clients how to wash and wear their hair easily and effortlessly. Mosaic Hair Studio and Blowout Bar is recognized as a Diamond Top Tier level Wella salon. This article has been viewed 160,573 times.
      8 votes - 100%
      Co-authors: 7
      Updated: August 18, 2023
      Views: 160,573
      Categories: Coloring Hair
      Article SummaryX

      Dyeing your hair black involves adding color instead of lifting it, so it's not as damaging for your hair as going a lighter color is. All you'll need is black hair dye and developer, which should come together in a kit. Fortunately, you don't need to use any bleach when you're going a darker color. Keep in mind that black dye fades over time, so you'll probably need to re-dye your hair every couple of weeks to maintain your hair color. You should also only wash your hair when you absolutely need to, since the dye will fade every time you wash it. For more tips from our Beauty co-author, including how to apply your hair dye, read on!

      Did this summary help you?

      Thanks to all authors for creating a page that has been read 160,573 times.

      Reader Success Stories

      • How.com.vn English: Alex Salt

        Alex Salt

        Jul 11, 2017

        "Nice tips! I really appreciate the cold water knowledge."
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