One thing that you should know is that hair that does not have enough melanin anymore will usually become clear which gives it the appearance of either looking white or gray. There is a slight difference with the hair depending on its appearance though. When you see hair that is still sort of grayish, this means that there is still some black colored hair left. When you have white hair, this means that the hair color has already gone. This explains why you only have white hair. One thing that you should remember is that the natural color of your hair will not have any effect on whether you would have gray hair or white hair when you grow older. You will always have the pigments available.
Gray and white hair are often signs of aging. Hair will usually begin to turn white or gray when people reach a certain age, although some people may get their hair turn white or gray prematurely. White hair happens when all of the pigmentations of the hair is completely gone. When the color of the hair is still gray, this means that there is still a small amount of pigmentation available, so the hair has not completely turned white. Take note that all of the hair that can be found in the body will always have their own cycle. The hair that we have on our heads will usually fall off and will be replaced with new hair, although there are some people who may have problematic hair follicles, and the hair will not grow anymore once the hair falls off.