It is caused by a variation in the Mc1r gene and is recessive. Red hair has the highest amounts of pheomelanin, around 67%, and usually low levels of eumelanin. At 1-2% of the population, it is the least common hair color in the world.

What is the ugliest hair color?

A team of Australian researchers named Pantone 448 C the ugliest color in the world after surveying some 1,000 people over seven separate studies in 2012. Respondents described the “sewage-tinted” color as “tar,” “dirty” and “death,” according to Brisbane Times.

What is the most unpopular hair color?

Natural red hair is the rarest hair color in the world, only occurring in 1 to 2% of the global population. Since red hair is a recessive genetic trait, it is necessary for both parents to carry the gene, whether or not they themselves are redheaded.