Black, blond, and brown. What makes the color of hair different? The answer lies in melanophore. The hair roots contain pigment cells called melanin, which creates a black pigment. Melanophore is a chromatophore that sends pigment to new hair. The greater the amount of pigment sent to the hair, the darker the hair becomes. On the contrary, as the amount of pigment sent is reduced, the hair color turns brown and then blond.
Some people believe that differences in hair color are caused by the differences in the intensity of ultraviolet rays contained in the sunlight, to which the hair is exposed. A baby’s hair begins to grow around the third month after conception. {Trichocysts} are first formed. They develop into hair follicles as the fetus grows, then become downy hairs several centimeters long when the baby is born. The total number of hairs is determined before the baby is born. After that, the number of hairs never increase only decrease.