Hello. Thank you for writing to us Seborrheic dermatitis Or dandruff is an important cause of scalp itching and increased hair shedding. Controlling dandruff effectively would reduce increased hair shedding as well. The shampoo that you have been asked to use contains ketoconazole, which is a very effective antidandruff ingredient in shampoos. You may use it every alternate days. Lather it well in to the scalp and allow it to act for at least 5-10 minutes before rinsing it off. Dandruff/ seborrheic dermatitis is a steroid responsive condition and would respond remarkably to topical steroids lotion. Since you have stubborn dandruff therefore there is a scope to add a topical steroid lotion once daily at night for initial 2 weeks of treatment. Topical steroid lotions can be discontinued once there is significant improvement i.e usually within 2 weeks. Thereafter the improvement can be sustained with anti-dandruff shampoo, used twice weekly for maintenance. The tablet that you have been prescribed contains biotin as the main active ingredient. Oral biotin helps in reducing hair fall and it can be continued. It is safe and there are no side effect of oral biotin supplement. Regards