The term "red haired irish" refers to a subset of the Irish population characterized by their distinctive reddish-blonde hair, often accompanied by fair skin and light-colored eyes.
This trait has long been associated with Ireland, and is often used as a physical descriptor of the Irish people. Red hair is a result of a recessive gene mutation, and it is estimated that about 10% of the Irish population has red hair, which is a significantly higher proportion than in other parts of the world.