Hair fall and dandruff can have many different causes, and the right treatment depends on your individual scalp and hair condition. A friend’s suggestion might sometimes help, but your doctor’s recommendation is based on an examination of your specific situation, which makes it safer and more effective. Using the wrong treatment could be ineffective or even irritate your scalp. Following your doctor’s advice gives you the best chance of finding a solution that is safe, effective, and tailored to your needs.