Red hair in Spain is a relatively common genetic trait that has been present in the Iberian Peninsula for centuries. It is estimated that around 10% of the Spanish population has red hair, which is a higher percentage than in most other European countries. Red hair is caused by a mutation in the MC1R gene, which regulates the production of melanin, the pigment that gives hair its color. People with red hair typically have fair skin and freckles, and they are more likely to experience sunburn than people with other hair colors.
Red hair has been associated with a number of different stereotypes and prejudices throughout history. In some cultures, redheads have been seen as being fiery and passionate, while in others they have been seen as being unlucky or even evil. However, in recent years, red hair has become increasingly fashionable, and many people now consider it to be a beautiful and unique trait. In fact, there are now a number of organizations dedicated to promoting the acceptance and celebration of red hair.