Adolescent girls with dandruff may be associated with seborrheic dermatitis, fungal infections, poor dietary habits, and frequent perming and dyeing of the hair. 1. Seborrheic dermatitis: puberty gonads begin to develop, hormone secretion increases, regulating the sebaceous glands begin to develop, increased oil, scalp with red spots, scales with itching, may be seborrheic dermatitis. 2. Fungal infection: If you don’t pay attention to scalp hygiene, your scalp is prone to fungal infection. After infection, the fungus will multiply and erode the scalp, accelerating the shedding of the scalp cuticle, thus making adolescent girls have more dandruff. 3. Bad eating habits: If you eat spicy and stimulating food for a long time, often picky or partial food, it will lead to a lack of vitamin B in the body, which will make adolescent girls dandruff. 4. Often permed and dyed hair: adolescent girls often permed and dyed hair in order to pursue individuality, which may damage the scalp, thus leading to dandruff. It is recommended that patients should develop good living habits and go to the hospital for treatment if necessary.