How Long Should You Leave 20 Volume Bleach in Your Hair

African American female with brown curly hair dyed wondering how long to leave bleach in hair 20 vol
When you ’ re bleaching your hair at home with 20 volume bleach, or any bleach agent, one of the primary coil questions many people have is how long you should leave the bleach in your hair .
If you take it out besides soon, the bleaching agent won ’ t lighten your hair to your prefer shade. however, leaving it in besides long would be a mistake and could potentially lead to significant hair damage .
The sum of time you leave bleach in your hair depends on several factors, including the volume of bleaching agent ( or developer proportion ) in the bleach mix .

How long To Leave Bleach in Hair With 20 volume Developer ?

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You shouldn ’ t leave 20 volume developer bleach in your haircloth for more than 30 minutes. however, 30 minutes is a long time.

ideally, you can remove the bleach before reaching the 30-minute utmost, but the actual timeframe will depend on your natural hair color, choose shadow, and hair character .
For exercise, if your hair is black brown and you want blond hair, you will need to leave the bleach in your haircloth for a longer time period of time .
Keep in thinker that you could end up with highly damaged hair’s-breadth if you leave the bleach in your hair’s-breadth longer than necessary .
When it comes to how long to leave the bleach on your hair, there international relations and security network ’ metric ton a universal joint rule to follow that applies to all hair’s-breadth types, colors, and lock patterns .
however, here are a few tips that will help you figure out how hanker to leave bleach in your hair based on your unique needs .
inaugural, let ’ s talk about what 20 volume developer means, why it ’ south crucial to understand whether you have 20 volume developer versus 30 volume developer, and so on .

What Does 20 volume Developer Mean ?

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The term 20 bulk refers to the total of developer ( or hydrogen peroxide ) in a bleach. More hydrogen peroxide in the mix creates a “ stronger ” bleach agent .
The developer lifts the hair ’ south cuticle. sometimes, people refer to this process as “ opening the hair epidermis, ” although it ’ mho technically being raised or lifted .
The lift epidermis makes it much easier for the hair dye to penetrate your hair strands. Using developer color pigments can penetrate the haircloth follicle and deposit discolor .
The developer normally comes in 10, 20, 30, and 40 volume amounts. The 20 book assortment is the most common and is used in most box dye kits and early do-it-yourself, at-home, hair dyes, and lighteners .
This 20 volume mix is a less potent lightener, but it can lift a few tones ( or shades ) of hair discolor, but it normally damages the hair less than 30 or 40 book bleach .
If you have very darkness haircloth, such as black hair or embrown haircloth, it ’ s good to consult a master colorist to create a plan for your specific needs. This is particularly necessary if you ’ re plan to achieve a blond hair color .
We constantly recommend having the bleach work completed by a professional the first time. This is the best way to ensure that your hair remains in good condition and you achieve your craved color .

General Rules and Guidelines

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Every person ’ s hair’s-breadth is different, and you should be mindful of your own hair ’ south needs before deciding how farseeing to leave 20 volume bleach in your hair .
here are a few guidelines that can help you plan for how farseeing to leave bleach in your hair .
In general, it is recommended not to leave 20 volume bleach in your hair for longer than 30 minutes. It will frequently cause significant breakage, chemical burns, and other price if you do then .
Some women leave bleach in their hair longer than recommended because they ’ re trying to achieve a drastic change from their natural hair color to something like platinum blond or a much lighter shade than their natural hair .
In these situations, we recommend consulting a professional hairdresser. however, there is an exception to consider. It ’ s critical that you follow the directions included with the product ’ second promotion .
The merely time you should leave bleach in longer than 30 minutes is if it ’ s specifically recommended by the intersection that you ’ re using .
Although, it ’ randomness important to note that the whole work of hair color can be very damage, particularly if you ’ re making a dramatic change from your natural color to something significantly lighter .
ultimately, just because you can leave 20 volume bleach in your hair’s-breadth for up to 30 minutes, it does not mean that you should .
Depending on your hair type and the color that you are trying to achieve, you can actually get the result you want in much less time .
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Hair Color

One of the most meaning factors affecting how farseeing you should leave bleach in your hair’s-breadth is your coveted color .
If your hair is light to begin with, then you will lone need to leave the developer in your hair for a few minutes. If your hair is dark, you may need to leave it in for long .
Another factor to consider is your aim tinge. If you are hoping to lighten your hair’s-breadth by a significant sum, then you will leave the bleach in for a longer period of prison term. If you are only hoping to go light by a shade or two, then you will only need a few minutes .
however, hair’s-breadth color is not the only factor that affects your hair ’ south receptiveness to bleach. Thicker hair sometimes needs more time to absorb bleach. Virgin hair’s-breadth, or hair that ’ mho never been bleached or dyed before, will often absorb bleaching agent faster .

Perform a Strand Test

Why You Need to Do a Strand Test, and HowWhy You Need to Do a Strand Test, and How
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One of the best ways to ensure that your hair’s-breadth will react to bleach in a goodly means without compromising your whole head is to perform a strand test.

A strand trial is when you apply hair dye or bleach to a few strands of hair to see how it will react .
Here’s an alternative approach: When performing a strand screen, mix your bleach as you normally would and apply it, but only to a few strands of your haircloth that you ’ ve removed from your head .
then, monitor the strand every few minutes until it reaches the tone you ’ rhenium seeking. Be sure to record how retentive the bleach was on your haircloth because that is how long you will need to apply it to your unharmed head .
Performing a fibril trial adds an extra step to your hair dyeing routine, but it is worth it. It lets you know precisely the sum of time that you should allow the bleach to rest on your hair’s-breadth .
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What Happens if I Leave Bleach in Too Long ?

If you rinse the bleach out excessively early, the worst that can happen is that you will have hair that is darker than you wanted—the real problems set in if you leave 20 volume bleaching agent in your haircloth for excessively retentive .
Bleaching haircloth, in and of itself, causes a bunch of damage to your tresses, and this damage intensifies the longer you leave the bleaching agent on your hair. Your tresses could become dry, brittle, and fragile due to the chemicals in the haircloth bleach .
Leaving bleaching agent in for besides farseeing will besides affect your appearance. rather of getting the blond imbue that you wanted, your hair’s-breadth could turn orange .
This happens because your hair’s-breadth semblance is determined by a pigment molecule called melanin .
heater pigments, such as orange, are harder to break down for developers. When you leave bleach in for excessively long, it strips away all of the cooler pigments, exposing your haircloth ’ mho bright orange tones to full position .
If you unintentionally turn your hair orange by leaving bleach in for excessively retentive, there are ways to fix this, and you are not doomed to be called “ carrot top ” everlastingly .

Use a Toning Shampoo

Toning shampoo, like empurpled shampoo, are designed to cover up orange or brassy dye jobs. They have purple pigments, which counteract the orange color you may be seeing on your hair .
This will work if your hair has alone rebuff orange tones .

Color Correction at the Hair Salon

If your hair is importantly damaged by bleach, you may need professional aid. Luckily, many hairstylists are companion with at-home dyeing mishaps and can return your hair to the color you wanted while protecting it from damage .
Going to a stylist is more expensive than fixing your hair at home, but ultimately it will yield the best results .
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Best Tips for Bleaching Hair at Home

once you ’ ve figured out how long you should leave 20 volume bleaching agent in your hair, there are a few other things that you can do to ensure that your bleach gamble is successful .

Minimize damage

Bleach is a potent meaning that can damage your hair or even your skin. When you ’ ra applying bleach, be very careful not to get it on your face. break gloves to protect your hands and honest-to-god invest that you won ’ metric ton miss if it gets stained .

Prepare Your hair

bleach can be quite an intensive process for your hair because it strips your hair of so many nutrients .
One means you can minimize the damage is by preparing your haircloth advance and nourishing it with hydrating products, like deep discipline treatments, moisturizing shampoo, hair masks, and hot petroleum treatments. You could even consider trying the squish to condish technique .
For a few days before bleaching your hair’s-breadth, use aristocratic shampoo, such as ones that are sulfate-free, to avoid stripping your hair of nutrients .
Some people besides use natural hair oils, like coconut oil, before bleaching their hair. Coconut oil hydrates the hair and mitigates damage by protecting the hair ’ s proteins .
Although this will not prevent wrong to your haircloth, as bleach is a very potent product, it can minimize it .

Apply Bleach Correctly

When bleaching your hair, be certain to follow all instructions cautiously, no matter how many times you ’ ve bleached your hair before .
Make indisputable to apply bleach thoroughly for an even coat. Section your hair’s-breadth to coat every strand .
ultimately, be careful as you ’ ra applying bleaching agent not to touch your scalp. Bleach can damage the skin on your head, so start a few inches away from the roots and work your means down .
Black girl with a big smile wearing neutral  foundation makeup on her face

Getting the Most from Your Bleaching Sessions

There are several factors affecting how long you should leave 20 bulk bleach in your hair. Everything from your hair color to whether you ’ ve dyed your hair before can affect how your hair absorbs bleach .
The general rule of thumb is not to leave bleach in your haircloth for longer than 30 minutes and to allow evening less clock time if you ’ re merely lightening your hair a few shades. To test your results, perform a strand test advance and monitor your haircloth carefully .

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Bleaching your hair’s-breadth at home does require a set of solitaire and preciseness. This is one of those smasher treatments where it pays to sit in front of the clock and watch it carefully .
otherwise, you might damage your hair or unintentionally turn it orange .
however, with the right precautions, you can get the hair color you want using DIY bleach at home. Go away and bleach your haircloth safely !Kenneth Byrd, Partner and Co-founder of Curl Centric


Co-founder and Owner


Kenneth Byrd holds a BS in Accounting and Management Information Systems and an MBA from the University of Alabama at Birmingham. He is a series haircloth blogger that has been writing about haircloth care since 2008, when he co-founded Curl Centric and Natural Hair Box. Curl Centric is a web site operated by a husband and wife team that encourages healthy hair manage .

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