A、Main causes of hair damage --- Most damaged hairs are caused by:
※ Excessive friction caused by combing or brushing
※ Excessive heat caused by blowers and curlers
※ Chemical reagents such as permanent solution and dyes
※ Exposure to ultraviolet rays in sun light
※ Environmental factors such as dryness and dust
B、Main causes of hair drop
※ Bad blood circulation around hair root
※ Lack of nourishment around hair root
※ Excessive sebum secretion
※ Excessive dryness around scalp
※ Abnormal (excessive) hormone secretion