Do you have a habit of coloring your hair? Hair dye does make your hair more varied and brighter, but hair dye contains chemical ingredients and can be harmful to your body. A British girl, after having dyed her hair with her own hair dye, felt itchy scalp, hot sensation, blisters, after which the head swollen almost twice as large, had to consult a medical treatment. If possible, please use products with natural ingredients as much as possible.

Possible risks of hair coloring

Not only the composition of the hair dye itself, it may have negative effects, the physical condition and state of each person, but also the extent of the impact of hair dye on the body. The more you use hair dyes, the higher the risk of cancer. Research shows that women who use permanent hair dye at least once a month for 1 year or more will increase their chances of developing Bladder cancer.

In addition, the body’s genes are associated with this. In the process of hair dye, the skin absorbs ammonia and derives Arylamines , the risk of developing bladder cancer is three times higher. Hair stylists who often come into contact with hair dyes are naturally more at risk than ordinary people.

Another study showed that Non-Hodgkin lymphoma if women use dark permanent hair dye 8 times a year or more for more than 25 years will also increase by 1 times.

Do not dye hair too many times during pregnancy

American College of Obstetricians and Gynecologists, ACOG pointed out that the amount of hair dye that the skin absorbs hair dye during pregnancy is small and may not cause much harm to moms and fetuses, but the Keck Medical School of Southern Plus, Assistant Professor Manuela Gago-Dominguez said that pregnant Women need to think twice when coloring hair, especially when using coal-based tar-containing hair dyes, as permanent hair dyes may increase the risk of cancer.

If you have these two, please don’t dye your hair.

Although slightly dyed hair will not have much effect on the body for a moment, but once the body has some condition, the body is already protesting to you, you should suspend the use of hair dye to avoid causing more damage.

When hair becomes dry and sensitive

Dr. Melissa Pirian of American Academy of Dermatology Melissa Piliang says that the outer layer of the hair fiber protects the house like a roof, and when you dye the hair, that layer will wear, making the hair look like straw. If you are dry and fragile, you should suspend the use of hair dye.

When the scalp is itchy or irritated

Pilian also points out that if the scalp has an inexplicable itch, pain, or even something strange, you may be allergic to hair dyes, as many people are allergic to benzodiamine in hair dyes (PPD) may be allergic, but symptoms are not noticeable at the beginning of use.

Hair dye’s types

Different types of hair dyes have different levels of impact. According to the National Cancer Institute, hair dyes contain More than 5,000 chemicals. There are 3 main types of hair dyes:


Temporary hair dye contains water, organic solvents and other chemical solvents, which cover dry hair (hair visible outside the skin, hair roots in the skin), but does not penetrate the hair and dye. After you wash your hair once or twice, it will fade away.


Semi-permanent hair dye deepens hair color, but does not enhance the brightness of the hair and usually contains peroxides.


Many major brands have permanent hair dyes, 80% of consumers use permanent because of the longer effect, but it contains a variety of chemicals such as: benzene, coal tar, hydrogen peroxide, ammonia, which, according to the Food and Drug Administration (FDA), causes cancer in animals.
Use natural substances as hair dye

Natural Hair Dye

The use of chemical hair dye, there is a risk to human health, change to natural substances as hair dye, less affect health, the following 6 types of natural hair dye for reference:


For darker hair color, use coffee. This is done by brewing a bit of coffee. After cooling, add a cup of coffee and a few cups of non-rinsing shampoo, add 2 tbsp coffee grounds to the hair. Leave the mixture for about 1 hour, then rinse with apple cider vinegar. to help keep hair color lasting longer.


Tea helps to darker the original hair color, but it is not easy to change color. The method is to use 3 to 5 tea bags, 2 cups of water to make tea, when the tea is cooled directly to dye, or mix with the free rinse conditioner; if you want to cover the white hair, add some fresh or dry sage.


Different herbs can dye hair in different colors, if you want to dye red, use calendula, marigold, rosehip or hibiscus. Dyed black or dark, choose from rosemary, nettle or sage. Marigold and marigold, saffron or sunflower petals can be dyed in gold. The method is to cook the herbs in water for about 30 minutes, etc., when cooled, filtered, sprayed, poured, or brush the hair with a brush, etc., for about 1 hour.


After grinding the leaves of henna into powder, mix 1 cup henna powder and 2 cups lemon juice, add 1 teaspoon vinegar, let the color of henna be released more, etc. 4~6 hours to make the mixture thicker , rub it onto the hair, comb a comb, wrap the hair with plastic film, wait 2 to 3 hours after washing.

Lemon juice

Put the freshly squeezed lemon juice, spray or brush onto the hair, wait for a few hours, if the hair is dried in the sun, the hair color will be brighter.

Walnut Shell

The Walnut Shell helps to dye the hair dark brown, crush the walnut shell, cook for about half an hour, then filter and apply to the hair. If you want to save time, you can also use walnut powder and wait for at least one hour before washing your hair. Use warm water to make your hair more lasting.