According to available information, the Udmurts are said to possess the reddest natural hair in the world.
The Udmurts are a Finno-Ugric people who live primarily in the Udmurt Republic within Russia. While red hair occurs naturally in various populations, the Udmurts are noted for having a relatively high concentration of individuals with red hair, leading to the common association.
It is important to note that red hair is a complex genetic trait influenced by multiple genes, primarily the MC1R gene. The prevalence of red hair can vary even within specific populations due to factors such as genetic drift and founder effects. Therefore, while the Udmurts are recognized for having a higher incidence of red hair, it doesn't mean every Udmurt has red hair, or that no other populations have similar concentrations.
