What are the harmful effects of hair dye

Having beautiful hair is what everyone wants, right? Hair can not only keep the head warm, but now young people are more pursuing fashion, not taking care of their hair, and often dyeing their hair into various colors. Many young people spend a lot of money on their hair to attract other people's attention and make themselves the focus of everyone. But have you ever thought about the harm of hair dye?

The principles and harms of perming

1. The ammonium sulfonic acid (alkaline) in the special perm solution enters the cortex through the hair scales on the surface of the hair, changing the protein chain structure of the hair to form curls. Perming generally starts with using reducing chemical solutions to break up the small springs of cysteine, breaking the sulfhydryl bridge bond of cysteine ​​and forming two cysteines. At this time, the amino acid chain links of the hair loosen and can be manipulated by people, curling into a certain waveform. Then apply fixative to make the cysteines that break the small springs combine in pairs nearby to form new springs and fix the hairstyle. During the perming process, the alkaline components and oxidation in the solution will damage the scales on the surface of the hair. Leaving the internal structure of the hair unprotected will cause the loss of internal moisture and nutrients, which is harmful to the hair, scalp and hair follicles. It will more or less denature the hair's keratin, making the hair prone to yellowing, brittle, dull and inelastic.

2. Pregnant women should not perm their hair because it will affect the health of the fetus. Little girls have delicate scalps and perming can easily break their scalps and cause bacterial infection. People with dry scalp should not perm their hair often. After perming our hair, there will be a peculiar smell that is difficult to wash off, which is also related to this thioglycolic acid substance. The safety of thioglycolic acid-based hair perming agents has always been a concern for people. According to research by Hualis Hair Restoration Experts, it is not only irritating and allergic, but may also damage the hematopoietic system. More seriously, it may induce diseases such as bladder cancer, breast cancer, lymphoma, and leukemia.

3. Hair dyeing uses the alkaline ingredients in the dye to open the hair scales on the surface of the hair (the scales on the hair open when they encounter alkali), allowing the artificial pigment to enter the cortex of the hair and combine with part of the natural pigment to form the desired color. When dyeing hair, ammonia in the dye has a strong destructive effect on the hair scales on the surface of the hair. If not properly maintained, it will cause the hair scales to fall off, moisture loss, roughness and brittleness, lack of luster and inelasticity. Many people are troubled by dyed hair that lacks luster or has difficulty maintaining color. Experts warn that no matter what kind of hair dye or its products are used, dyed hair generally contains toxic aromatic chemicals. Long-term use may damage the body's hematopoietic system or cause fetal malformations in pregnant women. In mild cases, it can also cause dermatitis, skin redness, swelling, itching, ulcers, etc. For the sake of health, try to dye your hair less or not at all. Natural beauty is the real beauty. Many people have allergic reactions to chemical solutions used for hair dyeing and perming, such as rashes, dizziness, and even redness and swelling of the skin. Therefore, special attention should be paid to prevent this allergic phenomenon. You can try a little bit on the skin first. If redness, swelling or allergy occurs, do not perm or dye it.

The above is our introduction to the harmful effects of hair dyes. After our introduction, I believe everyone is aware of the harm of hair dyes. Hair dyes will cause the hair to lose moisture and nutrients, which is harmful to the hair, scalp and hair follicles. It will more or less denature the keratin protein in the hair, making the hair yellow, brittle, dull and inelastic.