More and more young people are eager to dye their hair in pursuit of fashion, and many older people choose to dye their hair to make themselves look younger. However, hair dyeing can cause deterioration of hair quality and scalp damage. Recently, there have also been many instances of hair dyeing and allergies. The most serious is that hair dyeing may induce cancer.
The hair dye contains a chemical substance called p-phenylenediamine, which is a dye intermediate and is mainly used for aramid, azo dyes, sulphur dyes, acid dyes, and the like. It is not only the most effective ingredient in hair dyes, but also the most potentially harmful substance to human health. P-phenylenediamine has a strong sensitization and can cause contact dermatitis, eczema, and bronchial asthma.
There are relatively different prices for hair dye products, but basically all hair dye products contain p-phenylenediamine. The more harmful and cheap the hair dye products, the more harmful chemical ingredients they may contain, so consumers choose to dye their hair. When the product is best not to covet and cheap, it is best to choose a brand protection, relatively less harmful hair products.
The chemical components in the hair dye product will not only cause the user's scalp to be itchy and inflamed, but also cause heavy metal contamination. Due to the poor resistance of middle-aged and elderly people, slow metabolism and other reasons, the allergic phenomenon caused by hair dyeing is more likely than young people. The more hair colorings, the greater the damage to the body.
Therefore, experts suggest that try not to dye hair, if you must dye your hair, it is best not to exceed 2 times a year. At the same time, in order to avoid the pain caused by hair dye allergies to consumers, whether or not it is an allergic constitution, it is best to do some skin before dyeing. Tests, because at some stage, if something is not good, it can also be allergic to certain substances. In the supermarket to buy a variety of hair products, the instructions will generally be mentioned in the hair products painted on the ear or other skin 1-2 days, no allergies and then use, but the reporter visited some barber shops, generally will not Proactively giving consumers hair dyeing may cause allergies, and most customers are reluctant to spend time doing skin tests. However, once allergic, it will bring a lot of physical pain and money, so consumers are the best. Can pay attention to the skin test before hair dyeing, to minimize the potential safety hazards caused by hair products.
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