When you're expecting a new baby, you want to know everything you can about that baby: what gender it will be, who's nose she will have, what her eye colour will be and even what hair colour she might have. While there is no way to scientifically find out what your baby's hair colour will be until she is born, there are some clues you are given through genetics to help you determine what your child's hair colour will be.
Keep in mind that a dark-hair gene is dominant over a light-hair gene. This means that if you have one parent that has dark brown hair and one that is blond, you have a better chance of getting a dark-haired baby.
Look for recessive genes in your ancestry. For instance, do you have ancestors with red hair? Red hair is dominant over blond hair, so even if both parents have blond hair, if there is a recessive gene for red hair in their heritage, there is a good chance their baby could have red hair.
Know that eye colour often plays a role in hair colour. Dark hair is usually coupled with brown eyes, while blond hair is coupled with blue eyes.
Look at the baby's eyebrows when it is born. Even if your baby is bald, you can use his eyebrow colour as a general predictor of what his hair colour will be. Eyebrows are naturally about two shades darker than a baby's hair colour, so use that as a guide to determine what his hair colour will be.
Know that most children's hair changes colour several times through infancy and childhood. So, even if you are able to determine your baby's hair colour, it might not be the hair colour she keeps through life. Light hair tends to go darker with age.
By 1 month of age, most babies lose their dark scalp hair. Permanent hair comes in usually by 6 months and may not be the same colour as the scalp hair.