* Global Variation: Hair color distribution varies greatly across the world. Blonds are more common in Northern Europe, brunets are more common in Southern Europe, Asia, and Africa, and redheads are relatively rare globally.
* No Single Source: There's no single, reliable source that tracks hair color for the entire global population.
* Definition of "More": Even if we had global data, "more" could be interpreted in different ways:
* More individuals?
* More total hair strands?
* More hair volume?
However, based on general knowledge:
* Brunets are likely the most common: Brunet hair colors are prevalent across many populations.
* Blonds are likely the second most common: While less common globally than brunets, blonds are still relatively common in some regions.
* Redheads are the least common: Red hair is a recessive trait, making it less frequent.
Ultimately, there's no definitive answer to your question without a global census of hair color.