Important Factors For Bleaching & Dyeing Hair

In this tutorial, we try to answer some of your questions regarding hair bleach and hair dye. This video was provided by Mrs. Shadi Homayouni.


Greetings to all of you who are watching this video from Today we want to talk to you about one of the most requested topics in cosmetics.

Many women dye or highlight their hair and after a while change their mind and want to dye their hair black or darker color or vice versa.

Is it possible to change the level of bleach from a higher degree to a lower one suddenly?.

This is a common question for many women since most women dye their hair black and then decide to bleach it, or bleach their hair and then want to go back to black. Another common request is when someone with a naturally dark hair decides to dye her hair even a darker color but then, later on, decides to move to a very light color close to a platinum blond which is an almost light yellow color.

It also happens that some women have light hair and want to dye to a darker shade such as a level 4 natural dye. Changing your haircolor is often considered a good way to make some changes in your appearance. It is often the case that women who dye their hair blond or a lighter color, want to go back to their natural haircolor after a while. For this to be possible, we have to dye the hair back to a dark shade such as a level four. Since you have removed the natural hair pigments during the bleach, meaning we have removed all the yellow, orange, and red pigments from the hair, you have to add synthetic pigments to the hair, which is a hard process.

As you well know, a tube of hair dye is made of synthetic pigments and color. The process of adding this material must be performed in two steps. As a first step, we must prepare the foundation for our dye. Preparing the foundation for the dye is even more crucial for damaged hair. The process of preparing the foundation is itself performed in two steps. As we have removed the red from the hair during the bleach to yellow hair,
We have to add this material back to the hair during a dye to a level 4, 5, or 6. Keep in mind that you have to mix your dye with water instead of oxidant because oxidants can make the dye volatile and hence it will wash away easily. You have to mix your content based on the size of the hair you want to cover. Therefore, if you have 10 inches of hair to cover, you have to mix your red dye material for that amount of hair on a level 4, 5, or 6.

The mixture must be without any oxidant. Mix your dye with fifteen to twenty milliliters of water and start adding it to the hair from the back. Brush the hair after applying the dye and remove the excess material using a tissue. Wait ten to twenty minutes depending on how thin or thick the hair is. For thin hair, ten minutes is enough and if you are dealing with thick hair, let the product remain on the hair for twenty minutes so the pigments have enough time to enter the hair. You can now apply the dye the customer requested. You can mix your material using oxidant this time. Nevertheless, keep in mind that you should use the weakest oxidant product you have available, even if you have something weaker than six percent, it would be suitable.

A blond or bleached hair is already very weak and the hair cuticles will open easily even using the weakest type of oxidant, therefore there is no need to use a powerful one and risk damaging the hair in the process. As I told you, the more powerful the oxidant, the more volatile the dye. Wait for 35 to 40 minutes depending on the instructions and brand of your dye, and then rinse the hair. When three days have passed since your hair dye and you want to wash your hair, you might notice that you are still losing some of the dye during the shampooing process, and the blond hair is showing itself again.

Adding synthetic pigments to your bleached hair will damage your hair after a period. This effect is often overlooked because women think dyeing a bleached hair can’t damage the hair. This is a misconception since when you dye your hair a dark color you are injecting the hair cuticles with a high level of red, yellow, and orange synthetic pigments. This process is not recommended and will finally damage the hair. This process can be even more damaging than bleaching. This is a point you have to pay attention to. Your hair is one of the most effective elements of cosmetic beauty and caring for it is very important.

The next question is, what if someone has a natural black hair, and likes to bleach her or his hair. How must this process be best performed?
As I said before, the three main natural colors, red, green, and yellow, exist in our hair pigments. If you have already dyed your hair, you have already added these pigments to the hair again. To remove these pigments, we have to force the color out of the hair cuticles. Some women assume that this process can be done by using a simple decoloring material and as a result, they damage their hair in the process.

We always recommend using a remover instead of bleaching material. We would also recommend performing this process in two separate sessions instead of one. The exception to this rule is when the cortex isn’t dry because of excessive hair ironing, blow drying, or dying and the hair still preserves some its Keratin and moisture content across the hair. Otherwise, it’s recommended to go through the process in two or even three sessions. Doing the process in one sitting will most likely damage your hair. It’s even better if you sidestep this process altogether and instead wait for the hair to grow long, cut the hair and then bleach.

Keep in mind that removing a dark haircolor such as black or wine is very hard and no matter how much recovering product you use to moisturize the hair and recover it, it will never go back to its original state because the cortex has lost all it’s moisture and Keratin content. There are other women who have a dark hair, they bleach the hair, dye it a dark color again and later want to remove the dark color off of their hair to have the light hair again. Based on what I’ve told you so far, imagine how much damage removing the synthetic pigments from your hair after a bleach can do to your hair. This process will certainly burn your hair and you’ll end up with very damaged hair at the end.

I hope we have answered some of the questions you’ve asked here on For consultancy regarding hairstyling and hair dye, contact us at the numbers provided in the description or visit us at our center.

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