What should I pay attention to when dyeing my hair, and which groups of people should not dye my hai

Choose the right color; Sensitive people are not prone to hair dyeing. Time is constantly passing, and people are constantly shuttling in the long river of time, and at the same time, they have more and more requirements for their appearance and appearance. Hair dyeing is the choice of many people, and in the process of constantly changing hairstyles, people begin to experiment and discover.

More and more people are beginning to understand that hair color can not only add highlights to a new hairstyle, but also have many unexpected benefits, such as brightening the skin tone, such as improving the temperament. In short, want to change your image? Let's start by dyeing your hair.

There are many things to pay attention to when coloring your hair. Let's start with the color. Since choosing hair color is of course to change the original color of the hair, we also mentioned in the above paragraph that hair color plays a very important role in people's appearance, so it is important to choose a color that suits you.

The choice of color depends on the hairstyle, and it is better not to choose too bright colors for more conservative colors, which will make people feel that they are not very matched. If it is some more "trendy" hairstyle, then you must choose a bright color, so that it can be eye-catching.

In addition, the choice of color depends on the skin tone of the face. If it's darker, don't choose a darker color of the same color, which will make the whole person look very unenergetic. If you are white, you can be very capricious.

Hair dyeing is the choice of many people, but if it is a more sensitive person, don't dye your hair, after all, hair dye also contains a lot of chemicals. These are mild to sensitive people, causing itching, redness and swelling. If it is serious, it will cause ** to fester.

So if you are sensitive, don't dye your hair.

I remember when I went to dye my hair, the barber in that shop would ask me how long I had been perming my hair, because it was better to get it once a year, and my hair should not be permed too often, it was not very good for my hair. People who are prone to scalp allergies should not dye their hair.

When dyeing hair, it is best to use a good quality hair dye, because hair dye is a dye and has a carcinogenic effect, when dyeing hair, do not let the hair dye come into contact with **. If the hair dye drops into the eyes, it is best to rinse it off with water as soon as possible, and it is best not to dye the hair if it is damaged.

Some people are allergic to hair dye, and before dyeing their hair, it is best to do a test, and if they are allergic, do not dye their hair again. Women who are pregnant should not dye their hair, because the hair dye liquid will be absorbed into the bloodstream through the capillaries of **, affecting the healthy growth of the fetus. It is best for breastfeeding women not to dye their hair, because after dyeing their hair, the hair dye will also be secreted into the milk, which is not good for the health of the child.

People with allergies should not dye their hair, otherwise, there is a risk of allergies.

No matter what kind of hair dye you use, it is a chemical substance, so it is best to wear protective gloves when dyeing your hair to avoid direct contact with your hands.

Because hair dye is a dye, it has a carcinogenic effect on **, so the number of hair dyes should not be too much, usually up to 2 times a year, if the number of hair dyes is too much, the hair dye will accumulate into **, and when it reaches a certain extent, it has a carcinogenic effect. Dyeing your hair too often can also damage your hair.

If you have an allergy to the first color, it's best not to dye your hair a second time. The symptoms of allergies are redness, swelling, itchiness and pain in the area where the hair dye comes into contact with the liquid. Immediately after the onset of allergy symptoms, stop using hair dye. Severe cases need to be treated in a hospital.

After dyeing your hair, it is best to wash off any hair dye remaining on your head with clean water, including hair dye that remains on your hair and scalp, and it is best not to use shampoo.

Hair dye not only has a carcinogenic effect on **, but also may suffer from diseases of the blood system after being absorbed into the bloodstream. Therefore, in daily life, in order to ensure good health, it is necessary to minimize the number of hair dyeing.

When dyeing hair, first apply a single dye paste to the surface of **, and then dye the hair with the prepared target color after five minutes, the purpose of this is to make the dyed color more bright and durable, and it is not easy to fade. Hair coloring should not be heated with a steam engine, as this will lighten the target color and not have the desired color. The correct method should be to heat the hair with an infrared baking lamp for about 25 minutes, and rub the hair with both hands, this is to dye the hair evenly, and then wash it with warm water after the hair cools for five minutes, remember not to scratch the scalp when washing your hair to prevent scalp infection.

First of all, you must choose a hair dye that is more plant-based and does not hurt the scalp, so you must take care of your hair after dyeing, don't just blindly dye it, and you must pay attention to maintaining your hair in the later stage.

Do not wash your hair for the first three days before you need to dye your hair, because the oil secreted by the hair can protect the hair and scalp and prevent infection, and the oil secreted by the hair and the dust will not affect the color effect. On the contrary, if we wash our hair before dyeing or even scratch our scalp, it is easy to cause scalp allergies and infections.

Don't wash your hair for two days before dyeing your hair. Because the scalp will breed a kind of hair oil, the scalp is clean after washing the hair, relatively speaking, chemical acting will cause more damage to the scalp. Don't use the curling iron quickly after dyeing your hair.

Don't bathe at the same time after dyeing your hair. When dyeing your hair, you should first fade the original color of your hair and then dye it your favorite color.

Hair dyeing can indeed help us change some of our image, but it's far more powerful than that. If you want a healthy body, don't dye your hair anymore.

When dyeing your hair, you must pay attention to whether your hair dye is suitable for you, and whether the color is your own? Also, is this thing good after dyeing your hair? Is there any harm to yourself? These should be paid attention to.

Yes. The maximum time that hair dye can stay on the hair is usually about 15 to 20 minutes, and basically, the time should not exceed half an hour. However, when actually using hair dye, there are many factors that affect the length of time the hair dye stays.

It is very closely related to the thickness of each person's hair and whether or not the hair should be heated.

Precautions for hair coloring

Don't look at hair dyeing, it's easy to operate, but there are a lot of things we need to pay attention to. Before understanding the precautions of hair coloring, let's learn a little knowledge about hair coloring.

Principles of hair coloring

Hair is mainly composed of keratin proteins, and the rest of the components are pigments, lipids, trace elements, moisture, etc.

Hair is divided into three layers, which are the superficial layer, cortex, and medulla. If you want to dye your hair for a long time, you need to make the color closely integrated with your hair. The more the color enters the inner layer, the more stable it is, and it is best to enter the medullary layer.

Hair dye

Hair dyes are divided into according to whether or not there is a change in molecular structureOxidizing hair dyewithNon-oxidizing hair dyeTwo categories.

Most oxidized hair dyes are synthetic small molecule compounds that are long-lasting and not easy to fade after dyeing.

Non-oxidizing hair dyes are some pigments, and there are also heavy metal salts, and it is difficult to maintain the color for a long time after dyeing.

Among the precautions, the first point to talk about is people who are not suitable for hair coloring.

Category I. People who are prone to allergies.

Category II. People with high blood pressure, heart disease, asthma, blood diseases, etc.

Category III. Couples who are planning to have children, pregnant women, and women who are breastfeeding.

The second point is to mention pure plant hair dye.

At present, there is no real pure Xunzhixun natural plant-based hair dye on the market. Because, in the absence of oxidizing agents and chromogenic agents, it is difficult to cure the color for a long time.

The vast majority of hair dyes contain "p-phenylenediamine". The ingredient can cause contact allergic reactions, puffy eyelids, redness, and even itchy rashes.

At the same time, whether it is a hair dye that claims to contain plant ingredients or an ordinary hair dye, it must be obtained to obtain a "Wei makeup special brand" to prove its safety. Be cautious about buying hair dyes that are only marked with "fragrance and chemical association" or other lot numbers.

The third point is hair dye protection measures.

01 Check the surface of the scalp and other areas that are easy to contact with hair dye products, such as if there is any damage, if you are taking medication that may cause allergies, or if you are not in good health.

02 Gloves, earmuffs and other protective equipment are required. Vaseline can be applied to areas that are in easy contact with hair coloring products.

03 Pay attention to the amount of hair dyeing products used to meet the needs of dyeing, and should not be used too much.

04 Observe any abnormalities after use.

Other considerations.

1. Don't wash your hair the day before dyeing your hair.

The oil secreted by the scalp protects the scalp well, and to a certain extent, they can prevent harmful substances from penetrating into the body through the scalp. Therefore, it is best not to wash your hair and not use conditioner the day before dyeing your hair, otherwise it will affect the coloring effect. Don't get oily for a week before dyeing your hair.

2. Do a ** test before dyeing your hair.

Before dyeing hair, you should take hair dye and apply it to the delicate ** place behind the ear or on the inside of the arm, observe for 2 4 days, if there is no erythema, papules, blisters and other allergic reactions.

3. Apply some lotion around the hairline.

Before applying hair dye, you can apply some lotion or petroleum jelly ointment around your hairline, so that it is easier to wash off if it gets the potion. Before dyeing your hair, you can also remind your hairdresser to try to apply the hair dye 1 cm away from the hair roots to avoid direct contact with the scalp.