Is America harmful to health?

It is absolutely harmful. If you use traditional chemical hair dyes as black hair dyes, there will be toxins! . If you dye your hair often, toxins will accumulate. More than 20 kinds of harmful chemicals in hair dyes may induce skin cancer, bladder cancer, kidney cancer, lymphoma and leukemia after being absorbed through the skin 1%. A study by the University of Pennsylvania in the United States shows that people who regularly use chemical hair dyes are 3.8 times more likely to get sick than ordinary people, as evidenced by the news that hair colorists in China frequently give birth to deformed children. The accumulated chemical toxins in the body are like chemical reactors! Once the consequences of the reaction are serious