A vistor from Germany displays his 12-year beard growth. Redhead Day UK in north London. The annual event sees hundreds of 'gingers' from around the world join in celebration of red hair. Red hair (or ginger hair) occurs naturally in 1–2% of the human population. It occurs more frequently (2–6%) in people of northern or western European ancestry, and less frequently in other populations. The term redhead has been in use since at least 1510.