Grey hair, also known as gray hair, is a characteristic of hair that loses its color as a result of reduced melanin production. As a person ages, the hair follicles produce less melanin, causing the hair to turn grey or white.
The presence of grey hair is often associated with aging and wisdom. In some cultures, it is considered a sign of respect and experience. Grey hair has also gained popularity in recent years as a fashion statement, with people of all ages choosing to dye their hair grey.