Does bleaching your hair make it thinner? Does it make it grow slower?

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dye right after bleaching

  • On healthy hair that is usually moisturized, a well-done bleach won’t make it thinner. And it won’t make it grow slower either. It’s because the bleach isn’t applied to the hair bulbs inside the scalp.
  • What bleaching can do, however, is modify the appearance and texture of the hair according to the hair type and the previous chemical processes that were performed on the hair.

 

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There are many myths about bleaching, such as that bleached hair grows slower than hair that has never undergone the chemical process. And that’s just a myth.

However, the one word that should always be associated with bleaching if you’re concerned about the health of your hair is “care.”

Pre and post-care you should consider before bleaching your hair.

 

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You should also evaluate your hair history.

Bleaching virgin hair isn’t the same as bleaching previously bleached hair or even permed hair.

 

So, it’s all about common sense.

 Bleaching doesn’t make hair thinner, but successive bleaching could make it thinner. 

So, if your idea is to bleach your black hair into a platinum blonde, you’ll have to undergo several bleaching sessions.

 

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It means that you can’t do this change in a single day. Instead, you have to do it over several months as long as you want to prevent the bleaching from thinning your hair.

So, you should check if your hair is virgin or was previously chemically treated.

 

If your hair is virgin and you don’t want bleaching to make it thinner, you should check its porosity and the peroxide you’ll use during the bleaching process

hairdresser mixing developer and dye in a bowl

This is essential because fine hair isn’t the same as thick hair. Nor is porous hair the same as healthy hair, or even long hair the same as short hair.

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And all these issues will determine if your hair would be ruined during the bleaching process. That’s why you should consider a few things before.

 

  • Carefully choose the peroxide you’ll use.

If you have fine hair, a high volume peroxide will dry out your hair and damage it irreversibly.

Now, if your hair is thicker, it may be able to resist a stronger peroxide. Then, you can get the bleach to lighter levels with less damage and risk to your hair.

Please, never use a 40-volume peroxide to bleach your hair because you will literally burn it.

 

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low, medium or high porosity

  • Check your hair porosity because the color duration will depend on it.

If your hair is porous, prone to dryness, tangles, or has split ends, it’ll become more porous when you bleach it.

It means the color you choose will wash out much faster. Is there anything you can do to prevent this? Definitely, yes!

Always maintain a weekly nourishing and moisturizing routine. It’ll prevent your hair from deteriorating and the color from fading quickly.

 

paper keeps the heat

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  • Control the heat during bleaching, especially if your hair is long.

If your hair is long, the heat from your scalp only reaches a few centimeters. So, you’ll need to apply artificial heat on the rest. This way, you’ll achieve an even bleaching.

If you don’t manage to even out the heat, you risk not bleaching your hair evenly. Instead, you’ll get lighter and darker areas.

Therefore, the bleaching process is much easier on short hair because the heat is distributed more evenly.

 

 As you can see, although bleaching doesn’t make the hair thinner, it may damage it. So, you must take into account other issues.  

If your hair was chemically treated before, things may get worse.

 

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If your hair has been previously colored or permed, bleaching could make it thinner and damage it

We need to be realistic.

If your hair is dyed black or red, and you want to go to a very light color, your hair will suffer. You have already subjected it to bleaching, a previous chemical process.

And if you don’t moisturize and nourish your hair, bleaching can make your hair thinner because it’s already damaged.

 

 In this case, my advice is to go to a professional to bleach your hair and avoid thinning and breakage. 

But the situation is even more delicate if your hair is previously bleached or permed.

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In that case, these processes modified your hair’s structure. Therefore, bleaching will generate more damage, and you may notice your hair thinner.

 

Now that you know that bleaching can only thin previously chemically treated hair, you’re faced with your second question.

 

Can bleaching slow down hair growth?

lighten with homemade ingredients

And the answer is quite blunt.

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Bleaching, like any other chemical hairdressing treatment, works on the hair level.

 

 Therefore, it’s not strong enough to affect the root and the hair bulb, which is where hair growth takes place. Therefore, bleaching doesn’t affect normal hair growth. 

 

But, if you bleach your hair several times in one day or week, or use a peroxide that is more than 40-volumes, you could damage your scalp. And that could affect hair growth.

 

Conclusions

Bleaching is one of the most aggressive hair treatments. However, if your hair is healthy and you have never colored or bleached it before, you don’t run the risk of making it thinner.

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Therefore, if you notice that your hair is damaged or weakened, you should bleach it at a salon. That’s the best way to prevent your hair from becoming thinner or brittle.

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