What causes "grey" hair? if possible, how do you prevent it or at least slow the on set?

Caused: By build up of hydrogen peroxide in hair follicles. As we age we can't break down the hydrogen as well. So gray hair develops. The treatments are still very early. But talk to your doctor. Or homeopathic tx.

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 –