Hair dye is a very popular product nowadays because it is an item that can change the ordinary look of girls to be stunningly beautiful. It also follows fashion trends to be outstanding like a superstar. It also upgrades the look of young men to be handsome, cool, and unique in many styles, including pulling back the age of older people, changing gray hair to be dark, covering white hair, and adjusting the personality to look younger. However, because hair dye is a product that contains many chemical ingredients, many people are worri that hair dyeing may have negative effects on their health.
Hair dyes are divid into 3 types as follows:
- Permanent (oxidation) hair dyes are the most popular type. They contain hydrogen peroxide and colorless ingredients such as aromatic amines and phenols. When mixed together, a chemical reaction occurs that allows this hair dye to penetrate the hair shaft and remain permanent until new hair grows in. Darker colored hair dyes may contain a significant amount of these ingredients.
- Temporary type is a hair dye that coats the color on the surface of the hair and does not penetrate the hair. The hair color does not last long and may fade after only 1-2 shampoos.
- Semi-permanent is a type of hair dye that penetrates deep into the hair and has a fairly long-lasting effect. The color may fade after about 5-10 shampoos.
The most popular chemical used as an ingredient in hair dye products is paraphenylenediamine, or PPD for short. It is in both temporary and permanent hair dye products ทางเข้า ufabet. It often causes allergies in users. The severity of the symptoms depends on the amount used, the duration of the dye, and the physical condition of each person
Symptoms depend on the sensitivity of the skin to the substances in each hair dye, which will vary from person to person. If you find that you have irritation or an allergic reaction, even just a little, such as a burning scalp or red skin, you should avoid touching or using the hair dye again. Because the body’s immune system will remember the chemical and cause a more severe allergic reaction in the next use.
Therefore, it is necessary to test for allergies before use every time. Therefore, hair dye products must be closely monitor for safety by controlling the amount of PPD in hair dye products not to exceed 4 percent by weight