There are many reasons for yellowish hair, including malnutrition, ultraviolet radiation, disease factors, genetic factors, etc., can lead to this phenomenon, need to be analyzed according to the symptoms.
1. Malnutrition: for example, the lack of copper, zinc, iron and other trace elements, of which the lack of copper will lead to tyrosinase function is low and affect the melanin metabolism, the lack of iron, zinc will affect the development of hair cells, growth, and thus the phenomenon of yellowish hair.
2. Ultraviolet radiation: often in the sun, ultraviolet radiation may damage the scalp melanin, resulting in abnormal hair color or yellowish phenomenon.
3. Disease factors: such as hypothyroidism and other diseases, may lead to thinning and dry hair, yellowish hair phenomenon.
4. Hereditary factors: If the parents also have yellowish hair, the children may inherit it and also have yellowish hair.
There may be other reasons for yellowish hair, so it is recommended to go to the hospital in time to find out the cause and follow the doctor’s instructions for appropriate treatment.