How to Bleach Dark Hair at Home

Updated on November 6, 2019
Jayne Lancer profile image

A beauty consultant and former hairdresser by profession, Jayne has been advising on cosmetics and skin and hair care for almost 20 years.


Every women should try being a blonde at least once in her life—after all, blondes are said to have more fun. But if your hair is naturally very dark, the results of bleaching can be disastrous. Even hairdressers find it difficult to turn a brunette into a true blonde. That, however, doesn't mean it's impossible. In fact, it's quite easy if you know how.

Bleaching Products

But forget regular bleaching kits from drugstores intended for home use. They’re not strong enough for dark hair. Even after two or three applications, they never lighten beyond orange or a brassy yellow and cause untold damage. It's best to go to a beauty supplier where all necessary components can be purchased separately according to your individual needs. Or you can order a kit like Manic Panic's Flash Lightning over the Internet. Unlike regular kits, it's available in 30 and 40 volume strengths.

Before You Bleach Your Hair

Because of the strength of the products needed to successfully bleach dark hair to a true blonde shade, your hair must be in good condition, and you should wait at least a month after perming or straightening—if you don’t, your hair will become brittle and break.

It’s best if you don’t wash your hair for a couple of days before bleaching. That way, your scalp will be less sensitive to chemicals and therefore less prone to abrasions.

You won’t be able to bleach your hair properly on your own, so get a friend in to help.

What You Need

  • Latex or plastic gloves
  • A bowl made of glass or plastic (never use metal)
  • A tinting brush
  • A rat tail comb
  • Peroxide cream developer of appropriate strength (see below)
  • Purple or blue bleaching powder (purple and blue help reduce brassiness, but white will do if nothing else is available)
  • A plastic cap or a plain, transparent plastic bag large enough to fit over your hair.
  • Color toner (one in a light, cool blonde shade, and one in dark ash blonde in case you have to bleach twice)
  • Balancing shampoo (to restore your hair’s pH balance after bleaching)
  • Protein balancing conditioner

Cream developer and bleaching powder are included in the package contents of kits like Manic Panic's Flash Lightning.

If you buy from a beauty supplier, avoid a product called Red Gold Corrector. It used to be great mixed with bleaching powder and developer to prevent brassiness. Unfortunately, the formula was changed and color results became unpredictable.

For dark brown and black hair, you need 40 volume developer.
For dark brown and black hair, you need 40 volume developer. | Source

Peroxide Cream Developer Strengths

Implement cream developer strengths as follows:

  • If you want to lighten hair that is naturally blonde, you need 20 volume cream developer.
  • To bleach light to medium brown hair, you need 30 volume.
  • For dark brown to black, you need 40 volume, which gives maximal lift. Never go beyond 40 volume—it will burn your scalp and destroy your hair.
  • The strength of your toner should be 10 volume. This deposits color without lift.

Instead of buying developers of different strengths, you can dilute with water. If you dilute 40 volume developer with water to a ratio of 1-to-1, it will become 20 volume. If you dilute 1-to-1 again, it will become 10 volume.

The only disadvantage of diluting is that the developer becomes runny, which makes it difficult to work with.

How to Bleach Your Hair

Step One

First, divide your hair into four sections—two at the front, and two at the back of the head—and secure with clips. You won’t be able to do this if your hair is very short.

Step Two

Now mix the bleaching powder and cream developer according to the directions on the product packaging. A ratio of 1-to-2 respectively is usual, e.g., 3 oz powder and 6 oz developer. If the mixture is too fluid, add more powder.

Step Three

This is where it gets tricky and why you need someone to help. You also have to work very quickly in this and the next step, or your hair color will turn out uneven.

Starting at the back of your head, brush on the bleaching mixture working from the hair ends to the roots, but don’t cover the roots yet.

This obviously isn’t possible if your hair is short, but start at the back of your head nevertheless, since this is where your hair is naturally at its darkest and takes longest to lighten.

Step Four

After you’ve worked through all four sections, apply the bleach to your roots, starting at the back of your head. To do this, you need to expose your roots by systematically parting and flipping your hair with a rat tail comb or the tip of a tinting brush. Work from the top of your head to the nape of your neck in the back sections, and the center to the sides of your head in the front sections. To avoid chemical abrasions, take care not to get the product on your scalp.

The reason you leave your roots until last is because the heat from your head causes the bleach to develop more quickly than it does further down the hair. The color would turn out uneven if you were to cover your whole head at once.

Step Five

Now place a plastic cap or bag over your hair (the heat that develops under the plastic will boost lift), and wait 40 to 60 minutes, checking the color every ten minutes.

Your hair will go through various color stages as the bleach does its job. First it will turn from its natural dark color to orange, then from orange to yellow, and eventually to light yellow.

The bleach stops working after 60 minutes. Leaving it on for longer will only damage your hair and scalp with no further lightening effect.

Because bleaching your hair means putting chemicals on your head, you're bound to experience a little discomfort while the bleach works. If, however, it becomes unbearable, rinse your head immediately with cool water.

Step Six

As soon as your hair has reached the light yellow stage, rinse under lukewarm water.

Neutralize the Warmth

If you're naturally dark, you won't get your hair up to a true platinum blonde the first time you bleach—it will still have too much warmth. Apply a toner in a cool shade like light ash, silver or pearl to neutralize this. Do this even if you want a warmer shade like a golden or buttery blonde. If you apply a warm tone, chances are it will turn out brassy.

You should apply toner in exactly the same way as you applied the bleach. It usually takes 20 - 30 minutes to develop, but read the instructions provided in the package contents.

When you do your roots after four to six weeks, you’ll be able to get rid of the warmth, which will allow you to choose from a wider range of colors.

If Your Hair Still Isn't Light Enough ...

If your hair still hasn't reached the light yellow stage after 60 minutes, rinse and apply a toner in dark ash blonde. The ash tone will counteract the yellow and orange tones, and give you a color presentable enough for you to face the world until you can bleach for a second time.

You can bleach your hair again after a month and tone it to the shade you actually desire, but first it needs to recuperate. If you don't wait, especially if you’ve used 30 or 40 volume developer, your hair will become porous and break.

If you are naturally dark, you will not get your hair up to a true platinum blonde the first time you bleach.
If you are naturally dark, you will not get your hair up to a true platinum blonde the first time you bleach. | Source

How to Bleach Your Roots

Repeat steps one to six above, but leave out step three. If you bleach your whole head every time your roots need touching up, your hair will eventually disintegrate!

Your roots shouldn’t take as long to lighten as your whole head—developing time is usually about fifteen minutes shorter. Nevertheless, check the color every ten minutes as you did the first time you bleached.

When you do your roots for the first time, comb the bleach through your hair to the ends ten minutes before you rinse. This should get rid of unwanted warmth.

Apply toner in the same way—first to your roots, then comb through to the ends ten minutes before rinsing.

Regular use of a purple or "silver" shampoo will keep your color looking fresh between treatments.

You should bleach your roots every four to six weeks. Doing it more frequently will damage your hair, and if you wait too long, your new growth will be more than just roots, and as difficult to lighten as your whole head was the first time you bleached.

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

© 2014 Jayne Lancer


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    • profile image

      Jolene Patmanathan 

      5 weeks ago

      Thank you so much for explaining how to bleach hair and giving a detailed article. I have been struggling to find information. It's surprisingly difficult to find instructions on the basics of bleaching roots and lengths. Thanks again

    • Jayne Lancer profile imageAUTHOR

      Jayne Lancer 

      9 months ago from West London, UK

      I'm afraid I can't advise without seeing you, SaraAnne444. I recommend consulting a hairdresser who will be able to treat according to the product previously used and the condition of your hair.

    • profile image


      9 months ago

      Thank you! this was helpful!

    • profile image


      9 months ago

      How do I do this with purple as my hair color right now? I have 2 inches of brown and 8 to 10 inches of purple faded in some areas and a little deeper in others. I had it bleached blonde before I put in the purple a couple of months before purple. I want it back blonde. Help please.

    • profile image


      11 months ago

      thank you for answering everything comes to safety and application

    • Jayne Lancer profile imageAUTHOR

      Jayne Lancer 

      15 months ago from West London, UK

      @Naomi: Since your blonde color has been achieved with foils, I can't answer properly without seeing you. I'd probably recommended getting it done for the first time by a hairdresser; you need to make sure the right toner is used in order that the color is even. There might also be more dark in the length than you realize, which would need lightening without damaging the rest of the hair.

    • profile image


      15 months ago

      Damn, I so glad I found you! I'm in the process the process right now and you answered every question I had. Not to mention the steps you provided are on point! Thank you so much for helping.

    • profile image


      22 months ago

      Thank you so much this was so helpful. You're amazing.

    • profile image


      23 months ago

      Thank you a lot usefull information, feel better about the How and Why.. thank you

    • profile image


      2 years ago

      Can you opt to just bleach your roots/regrowth yourself if you have usually had your hairdresser do foils in your hair in the past? My hair is naturally a dark brown but all the length of it is a lovely blonde colour now after getting foils done gradually. Yet now I'd just rather get roots done every 4-6 weeks. Is this possible? Thanks

    • profile image

      Allyson Fawn 

      2 years ago

      Fantastic article! Thank you for the step-by-step instructions. As a brunette who prefers to do my own color, and has bleached incorrectly previously, this is a huge help!



    • profile image


      3 years ago

      The step by step article was well written.. Thank you

    • Jayne Lancer profile imageAUTHOR

      Jayne Lancer 

      5 years ago from West London, UK

      Really very well done!

    • mdscoggins profile image

      Michelle Scoggins 

      5 years ago from Fresno, CA

      Thanks Jayne that is me on the avatar :)

    • Jayne Lancer profile imageAUTHOR

      Jayne Lancer 

      5 years ago from West London, UK

      Thank you, Mdscoggins! If that's you in your avatar, your hair looks great! Yes, my intention in this article was to save people the frustration and damage often caused when trying to bleach dark hair to blonde.

    • mdscoggins profile image

      Michelle Scoggins 

      5 years ago from Fresno, CA

      Hi Jayne I currently bleach my hair to a platinum color and I'm naturally dark. It really is a pain but I love the outcome. Being a past hairdresser I really appreciate the most basic steps you include that can be very helpful for the person that is inexperienced with color and bleach. Great article. Voted up.

    • Jayne Lancer profile imageAUTHOR

      Jayne Lancer 

      6 years ago from West London, UK

      Glad you found something new in it, Moonlake. Thank you very much for the vote up, for pinning, and for taking the time.

    • moonlake profile image


      6 years ago from America

      Great information and so much I didn't know about. Voted up and pinned.

    • Jayne Lancer profile imageAUTHOR

      Jayne Lancer 

      6 years ago from West London, UK

      Thank you, Cyber Shelley! Yes, it can look very good if it's done well.

    • CyberShelley profile image

      Shelley Watson 

      6 years ago

      I did bleach my hair when I was in my early 20's. Well the hairdresser did, I loved it and most people didn't believe I was naturally dark. Lots of fun. Up, interesting and useful


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