 [ Symptoms ] are there any vitamins or dietary supplements i can take to make my hair look healthier and grow stronger [ Disease ] most people living in america receive enough of the vitamins and minerals needed for healthy hair through their diet and daily multivitamins i do not routinely recommend any additional vitamins or supplements for healthier hair unless a specific deficiency has been identified in a person is blood work low ferritin    a marker of the body is iron stores    can often be supplemented as can vitamins d and b12 however be cautious of over ingesting certain supplements such as vitamin a arginine or selenium which can actually cause hair loss at very high doses