Why does hair loses its pigmentation with age?

As people age, hair loses its pigmentation primarily due to a decrease in melanin production from melanocytes, the cells responsible for hair color. This reduction occurs as melanocytes gradually die off or become less active over time. Additionally, the accumulation of oxidative stress and genetic factors can further impact melanin production, leading to gray or white hair. Consequently, the natural aging process results in the loss of color in hair strands.