Biological factors influencing hair pigmentation and graying

Scientific observations and medical insights explore the biological mechanisms behind hair color changes and the onset of graying. A study of 476 children aged 6 to 13 revealed that 70.8% of those who were blond in early childhood transitioned to brunette hair during later childhood.

This phenomenon is driven by the production of eumelanin, a pigment produced by melanocytes. While blond hair is associated with low levels of eumelanin, the production of this pigment can intensify as a person grows, leading to darker hair in new growth cycles.

Regarding the graying process, Dr. Cezar suggests that the rate of graying may differ between blond and brunette individuals due to mineral requirements. Because darker hair requires a higher concentration of pigment, it may demand more copper to support the biological processes involved in pigmentation. Consequently, individuals with darker hair may experience a higher demand for this trace mineral to maintain hair color compared to those with blond hair.