The most dangerous for the elderly use hair dye
Many elderly people to make white hair black, very keen on hair color.
Multi-country studies have shown that people who regularly dyed hair, breast cancer, skin cancer, leukemia, bladder cancer incidence will also increase.
In particular, the elderly, due to the low resistance, weakened immunity and more likely than young people and toxicity after dyeing hair, contact dermatitis, and even cancer and other diseases.
