Dyeing your hair twice a month can be harmful to your skin. It is easy to increase local skin allergies, increase the risk of cancer, damage scalp hair follicles and so on.
1. Increase local skin allergies: Hair dyes contain many chemical components, such as benzidine, hydrogen peroxide, p-aminophenol, toluene and so on, in the process of dyeing hair, hair dyes will come into contact with the scalp, repeated stimulation of the scalp, prone to allergies, such as redness, swelling, itching, pain and so on.
2. Increase the risk of cancer: most hair dyes contain carcinogenic substances such as phenylenediamine and nitrobenzene. Frequent use of hair dyes within a short period of time will lead to the accumulation of harmful substances in the skin, which may increase the risk of cancer.
3. Damage to scalp hair follicles: chemical components in hair dyes can easily damage hair follicles, leading to atrophy or even necrosis of hair follicles, resulting in hair loss.
It is recommended that patients do not dye their hair frequently on weekdays and minimize the number of times they dye their hair to avoid damage to the skin.