10-Step DIY: How to Bleach Long Hair

by  Mila M.Cosmetologist

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Struggling with achieving that perfect blonde look on your long hair at home? You may not be alone. This comprehensive guide will show you how to safely bleach long hair right in the comfort of your own bathroom – without any damage.

Start reading now, and transform yourself into a pro DIY stylist today!

  • Bleaching long hair at home can be done safely and effectively by following the right steps and precautions. It’s also important to read our step-by-step guide on hair bleaching.
  • To bleach long hair, you will need bleach powder, peroxide, a plastic bowl and brush, sectioning clips, a shower cap or cling film, and a timer.
  • It is important to start the bleaching process from the tips and mid-lengths of your hair and take safety precautions to prevent damage.
  • For long thick hair, the bleaching process can take around 30 – 45 minutes on average.
  • Whether your hair is really long or short, you can successfully bleach it by working in small sections for even application.

Bleaching long hair as a beginner can be a daunting task, but with the right materials, instructions, and precautions, it can be accomplished safely and effectively at home.

Below is a simple list of do’s and reminders to help you through the process.

How to Bleach Long Hair for Beginners

Bleaching long hair at home can be quite a challenge, but with the right steps and precautions, you can achieve salon-like results.

How Do You Bleach Long Hair Yourself?

  1. Begin by purchasing professional-grade bleaching products. Household items should not be used.
  2. Protect your clothes and surfaces from the bleach by wearing an old shirt and putting down towels or newspaper.
  3. Comb through your hair to remove any knots or tangles, ensuring it’s fully detangled before beginning the process.
  4. Mix the bleach and developer in a plastic bowl using a ratio of one part bleach to 1.5 – 2 parts developer ( but follow what’s on the manufacturer’s box if different ).
  5. Section your hair into four quadrants to ensure an even application of the bleach mixture.
  6. Apply the bleach mixture starting from ends to roots, making sure not to skip any strands or sections of your long hair.
  7. Cover your hair with a shower cap while allowing it to process for up to 45 minutes, but check every 10 minutes.
  8. Rinse out the bleach thoroughly with cool water once you’ve achieved your desired lightness level.
  9. Follow up with a high-quality protein treatment or deep conditioner to replenish moisture lost during the bleaching process.
  10. Avoid washing your hair too often post-bleach. Opt for dry shampoo instead, as this can help preserve natural oils and prevent further damage.

How Much Bleach Do I Mix for Long Hair?

  • You should use 1 part bleach to 2 parts developer for an effective blend.
  • Using lower volume developers, like a 20 or 30 volume, minimizes potential harm to your locks.
  • Creating the right bleach mixture for your long hair is critical to achieving a successful and damage-free lightening process.
  • Make sure you thoroughly mix the bleach and developer before applying it to your hair strands.
  • For even application of the bleach mixture, divide your hair into small sections first and start with the back sections where hair tends to be darker.
  • Once you’ve applied the bleach, cover each section with a shower cap for uniform heat distribution during processing time.

This method helps attain desirable even tones in bleaching long hair at home while minimizing possible damage.

If this is your maiden attempt at home bleaching or if you’re unsure about anything in these steps – enlisting professional help from a colorist may save you headaches down the line.

How Long Does It Take to Bleach Long Thick Hair?

On average, the bleaching process for long thick hair can take around 30-45 minutes.

The time it takes to bleach long thick hair can vary depending on individual factors such as hair type and desired level of lightening.

It’s important to note that this is just an estimate. You must always follow the instructions provided with your bleach product for the best results.

Remember, it’s better to take your time and ensure even application rather than rushing through the process.

Can You Bleach Really Long Hair?

Yes, bleaching really long hair is definitely possible! Whether your hair reaches your waist or even longer, you can achieve the lightened look you desire.

It’s important to note that bleaching long hair may take a bit more time and effort compared to shorter lengths, but with proper care and technique, you can successfully bleach your long locks.

When bleaching really long hair, it’s crucial to work in small sections to ensure even application of the bleach mixture. This will help prevent any unevenness or patchiness in color.

Additionally, be mindful of the health of your hair by using coconut oil as a pre-lightening treatment. Applying coconut oil before bleaching helps protect and moisturize your strands.

I cannot stress this enough. Remember to mix the bleach powder and developer properly according to the recommended ratios for good consistency.

Apply the mixture evenly throughout your hair, making sure every strand is covered.

Leave the bleach on for the recommended processing time based on your desired level of lightness.

By following these steps and taking necessary precautions, you can safely bleach really long hair at home without causing excessive damage.

Is It Better to Bleach Long or Short Hair?

It really depends. When deciding whether to bleach long or short hair, there are a few factors to consider.

First, it’s important to note that the bleaching process can be damaging to your hair, regardless of length.

However, shorter hair may be more prone to damage because the ends may have been exposed to more styling and heat over time.

On the other hand, longer hair may require more product and time for an even application.

Additionally, if you plan on achieving a lighter color with your bleach job, it may take longer for the bleach to lift dark pigments from longer strands.

Ultimately, the decision of whether to bleach long or short hair depends on personal preference and the desired outcome.

It’s crucial to prioritize the health of your hair by taking proper precautions and following a safe process when bleaching at home.


By following this easy home bleaching guide, you can safely bleach your long hair without damaging it.

Remember to use the recommended products and ratios, apply the bleach evenly, and protect your scalp with a shower cap.

With proper care and maintenance, you can achieve the desired shade of blonde while keeping your hair healthy and vibrant.


Q: How can I bleach my long hair safely at home?

With a step-by-step guide, you could apply bleach on your long hair while ensuring not to damage your natural hair color or strand’s health.

Q: Can I switch from dark brown or black hair to blonde using bleach?

Yes! Using hydrogen peroxide-based hair bleach and following the proper process considering factors like natural level and hair porosity, you can turn your dark brown or even black hair into light hues of blonde!

Q: Is it necessary to get professional help for bleaching my first time?

While expert advice is a great option, with good guidance and understanding of important things like patch tests, strand tests, and keeping the right care products like purple shampoo handy; a DIY bleach job at home is entirely possible for first-timers!

Q: What should be done if, after the bleaching session, the result is more orange tones than the desired shade of blond on wet/dry/coarse/curly type of hair?

Utilizing color-safe shampoo or toners helps neutralize orange tones post a bleaching session along with maintaining good condition for all types of hair.

Q: Is homemade lemon juice an alternative to chemical-filled commercial lighteners to lighten my virgin/natural/ unprocessed/coarse/curly hairs without risking chemical burn?

Lemon juice acts as a natural oxidizing agent capable enough to make lighter color strands out of darker ones; Though it might take longer time compared to conventional methods & results are often subtle.

Q: Can I continue normal care routine post-processing using regular shampoo without conditioning/protein bonding treatment?

Post-processing/coloring service requires specific maintenance measures such as the usage of color-treated regular shampoos/suitable conditioner/protein bonds restoration treatments that ensure longevity & healthiness keep up well with dyed hairs.

Q: Can I bleach my hair at home?

A: Yes, you can bleach your hair at home. Just be sure to follow instructions on your bleaching products very strictly.

Q: How can I bleach my hair at home?

A: To bleach your hair at home, you will need a hair bleach kit and follow the instructions provided. Check out the step-by-step guide provided in this article.

Q: Should I go to a salon to bleach my hair?

A: If you are not experienced in bleaching hair, it is recommended to go to a salon and seek the assistance of a professional colorist.

Q: What is the purpose of bleaching hair?

A: The purpose of bleaching hair is to lighten the hair color, especially for those who want to achieve a blonde hair color.

Q: Can I bleach dark hair?

A: Yes, you can bleach dark hair, but it may require multiple sessions to achieve the desired lightness.

Q: Will bleaching my hair damage it?

A: Bleaching can potentially damage your hair, so it is important to take proper care and follow a hair care routine after bleaching.

Q: What should I do to minimize hair damage after bleaching?

A: After bleaching, you should use hair masks, deep conditioners, and avoid heat styling to minimize hair damage.

Q: Should I wash my hair before bleaching?

A: It is generally recommended not to wash your hair right before bleaching, as the natural oils can help protect the hair during the bleaching process.

Q: Do I need to section my hair before bleaching?

A: Yes, it is important to section your hair before bleaching to ensure even application of the bleach and avoid missing any areas.

Q: How do I section my hair before bleaching?

A: Sectioning your hair before bleaching helps ensure even application. Start by dividing your hair into four sections: top, back, and two sides. Use hair clips or ties to secure each section.

Q: How can I bleach my long hair at home safely?

A: Bleaching long hair at home can be done safely by following these steps: sectioning your hair, choosing the right bleach and developer, applying the bleach evenly, monitoring the processing time, and rinsing and conditioning your hair properly.

Q: What are the steps to bleach my hair at home?

A: Here is a step-by-step guide to bleaching your hair at home: 1. Section your hair into manageable parts. 2. Mix the hair bleach and developer according to the instructions. 3. Apply the bleach evenly, starting from the ends and working your way up. 4. Monitor the processing time to achieve the desired lightness. 5. Rinse the bleach out thoroughly and shampoo your hair. 6. Apply a deep conditioner to nourish and hydrate your hair.

Q: What is a strand test and why is it important before bleaching?

A: A strand test involves applying a small amount of bleach mixture to a hidden section of your hair to see how it reacts. It is important to do a strand test before bleaching your entire head to avoid any potential damage or unwanted results.

Q: How long should I leave the bleach on my hair?

A: The processing time may vary depending on your desired lightness and the bleach product you are using. It is recommended to follow the instructions provided with the bleach and regularly check your hair during the process.

Q: Can I bleach my dark brown hair to platinum blonde at home?

A: Going from dark brown hair to platinum blonde may require multiple bleaching sessions and can be challenging to achieve at home. It is recommended to consult a professional hair colorist for best results.

Q: Can I bleach my hair if it is already dyed?

A: Bleaching over previously dyed hair can be more challenging and may require additional steps to lighten the color. It is best to consult a professional hairdresser to assess the condition of your hair and determine the best approach.

Q: How can I maintain the health of my hair after bleaching?

A: After bleaching, it is important to nourish and hydrate your hair to maintain its health. Use a deep conditioner regularly, avoid heat styling tools, protect your hair from sun and chlorine exposure, and trim regularly to prevent split ends.

Q: How long does it take for bleached hair to turn pale yellow?

A: The time it takes for bleached hair to turn pale yellow can vary depending on your natural hair color and the strength and type of bleach used. It is important to monitor the process and check your hair regularly to achieve the desired result.

Q: What should I do if I have dry or damaged hair before bleaching?

A: If you have dry or damaged hair, it is recommended to improve its condition before bleaching. Deep conditioning treatments, regular trims, and avoiding heat styling tools can help restore the health of your hair.

10-Step DIY: How to Bleach Long Hair
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Mila, the veteran beauty cosmetics professional and author of this article, while cutting and styling the hair of her client

Hi! I’m Mila M. I share my 44 year-experience as a Cosmetologist & Beauty Professional in this blog. This content is for educational purposes only and does not constitute professional advice. Consult your trusted Beauty Professional for your personal beauty needs.

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