Vitamin B complex is an essential group of vitamins and consists of Thiamine (B1), Riboflavin (B2), Niacin (B3), Pantothenic Acid (B5), Pyridoxine (B6), Biotin (B7), Folate/ Folic acid (B9) and Cobalamin (B12). Each of these vitamins has its own importance. Biotin is essential for healthy and beautiful hair as well as nails. Vitamin B12 is yet another important vitamin in this complex.