Introduction: Premature hair graying (PHG) is a relatively common condition affecting up to 50% of the young people before age 30. Hair graying has adverse effects on self esteem, socio-cultural acceptance and may lead to social stigma and discrimination. Studies have linked PHG with a variety of underlying ill-health conditions such as myocardial infarction, cancer, osteopenia, stroke and cirrhosis. In Tanzania and indeed in Africa at large, PHG is rarely studied. The present study aimed to describe the pattern of onset and anatomical distribution of premature hair graying among the young adult sufferers.