Is there any medication, vitamins or hair oil for premature grey hair? what cause premature grey hair?

No known solution: Pigmentation in follicles require proper 1)production of melanin (the pigment) and 2)the proper transfer of melanin into the follicles. If either of these steps is amiss, we will grey. In a healthy individual, when we start to grey is genetically programed. In an extreme situation such as starvation or malnutrition, we will experience hair loss, reduce melanin production, and thus greying.

Graying of hair is: related to genetic predisposition. Age of initial graying is largely a matter of genetics. However stressors: nutritional deficiencies, chemotherapy, traumatic head injuries, low vitamin B levels, zinc deficiency, severe illness, surgery & marked emotional stress may impact earlier depigmentation in people who are already predisposed to gray hair. Aging is a significant factor. In general –