What Causes Gray Hair?

Gray hair may be merely a cosmetic problem but it can have serious effects on an individual's self-esteem and emotional state. For many, the appearance of their first gray hairs signifies they're getting older in a very real way. In most cases, gray hair can be colored easily with hair dye to cosmetically restore the individual's natural hair color but hair dye must be touched up every few weeks. If individuals are in their forties or fifties, gray hair may seem like a natural part of getting older but even individuals in their teens and twenties can develop premature gray hair for a variety of reasons.