Potatoes are rich in many vitamins and minerals, including Vitamin C, Folic Acid, and Vitamin B Complex, which are all very beneficial for your hair. The following is a well-known natural remedy to accelerate hair growth: Peel and then boil 3 to 4 potatoes for about 15 minutes. Remove the potatoes and let the water cool. Wash your hair and then rinse it with the potato water. The potato water will strengthen your hair roots and energize your scalp. For best results, use the water the same day.