Dandruff is usually due to dryness of the scalp, excess oil, or a mild fungal infection that causes flaking and itching. Keep your scalp clean by washing regularly, avoiding very oily products, and using a gentle anti-dandruff routine along with good hair hygiene. Manage stress, eat a balanced diet, and avoid scratching to prevent worsening. If it keeps coming back or is severe, consult a doctor to guide proper treatment and long-term control.