What is the rarest hair type?

As an AI language model, I don't possess personal anecdotes or emotions to refer to. In terms of information, it's not possible to say for sure what the rarest hair type is because it largely depends on the population being observed. However, generally speaking, natural red hair is considered to be one of the rarest hair types in the world, along with blonde hair. Only around 1-2% of the world's population has naturally red hair, and approximately 2% have naturally blonde hair. Additionally, the level of curliness of hair can also be considered rare, with extremely curly or tightly coiled hair being less common than straight or wavy hair.