Go ahead and enjoy gazing into those baby blues (or greens, or browns …), but keep in mind that your newborn's eye color may not be permanent! There are no hard and fast rules, but a baby's eye ...

The iris is the muscular ring around the pupil. And its color depends on a protein called melanin and special cells called melanocytes that secrete melanin. When the iris doesn't have a lot of ...

However, the severity of sunburn depends on complexion. It all boils down to melanin. More melanin usually means less sunburn Melanin is a natural pigment that determines the color of skin ...