Grey hair occurs when the hair follicles produce less melanin, the pigment responsible for hair color. This reduction in melanin is a natural part of the aging process, leading to the gradual loss of color in hair strands. Genetics also play a significant role, as some individuals may experience grey hair earlier than others. In addition to aging, factors such as stress, smoking, and certain medical conditions can contribute to premature greying. While grey hair is often associated with wisdom and maturity, many people choose to embrace it, while others may opt for hair dyes to maintain their original color.