Thinning hair isn't just a man thing. For many women of all ages, hair loss is a reality. And while men can opt to shave their heads, that's usually not an option for most women. An estimated 30 million women in the U.S. suffer from thinning hair. There are a number of factors that can contribute to hair loss: medication, illness, heredity, chemicals, poor diet, thyroid problems, stress... The list goes on and on. Even more mind-numbing is the realization that the average age of a woman contending with this issue is between 25 and 35. And while you may not always be able to pinpoint the cause, there are steps you can take to compensate for hair loss. Consider adding some color to your life -- it could be just the boost you need. Coloring the hair adds body and volume to the hair. If it's going to be a DIY job, use semi-permanent dyes which don't have ammonia or peroxide. However, if you're going the professional route, you can safely go with permanent or semi-permament color.