Hair is fine and soft, dandruff is serious, what reason should do again

Dandruff is also known as pityriasis scalp, mostly because of abnormal sebaceous gland secretion, scalp caused by fungal infection and other factors, can use antifungal shampoo treatment, such as ketoconazole, selenium disulfide, hair fine and soft less genetic and nutritional, can be under the guidance of a doctor topical minoxidil tincture to promote hair growth.