How long does it take to dye your hair

In the modern society that is increasingly pursuing fashion, every part of the body should be exquisite. Hair is also a factor that cannot be ignored. Good-looking hair can increase a person's appearance score. A hair color that suits you is a good choice. So many people go to the barber shop to dye their hair, but most people who have never dyed their hair don't know how long it takes to dye their hair. So how long does it take to dye your hair?

1. How long does it take to dye your hair?

1. The time required for hair dyeing depends on the color. If you want to dye your hair the color it is naturally, it will take a long time.

Usually about 40 minutes to an hour

If it is other colors, it will take 1 to 2 hours. And the time of dyeing hair has little to do with the length of hair.

2. The interval between each hair dyeing should be more than 3 months, because it takes about 90 days for the hair cuticle to repair. It will not cause so much damage to the hair if you wait until the hair is repaired before dyeing it. However, you should also pay attention that it is best not to perm and dye your hair at the same time, because this will cause great damage to the hair. Dyed hair needs careful care and maintenance to extend its shelf life, otherwise it will become messy, dry and split, causing the annoying problem of hair loss.

2. Harm of hair dye

1. Allergy: The most common harm of hair dyeing is contact dermatitis. Currently, most hair dyes contain the allergen - paraphenylenediamine. Some people will have an allergic reaction to this chemical ingredient. After using hair dye, they will experience swollen eyelids, red skin, and even small itchy rashes. These abnormal phenomena can only be eliminated after taking anti-allergic drugs. Allergic reactions will occur again if you dye your hair again in the future. Hair dye has now become an important cause of contact dermatitis. Among patients with contact dermatitis, about 20% are caused by hair dyeing.

2. Carcinogenic: All hair dyes currently sold on the market, regardless of brand, must contain a chemical ingredient called "azo dye". "It is difficult to color hair without adding this chemical. Even if it is possible, the color is not permanent and will fall off in a day or two." However, the medical community has confirmed decades ago that this dye can cause bladder cancer.

3. The purpose of hair dye

One is to dye black to cover up gray hair. The second is for fashion. Change the color of your hair according to your mood, match it with clothes and makeup, and fully show your personality. Hair dyeing has become a fashion. Young people can change the color of their black hair according to their mood, matching it with clothing and makeup to fully show their personality, while middle-aged people have to dye their hair black frequently because of their continuous growth of white hair.