There are so many type of hair brush available that choosing one can sometimes be hard. Then once you have one you like the tendency to hang on to it as long as you can kicks in which can actually end up causing you to damage your hair with a worn out brush.
A hair brush, just like a toothbrush is actually good for only so much time before you should consider replacing it with another. The optimal lifetime of a brush will vary based on many factors including; material it is made from, hair type being used on, as well as the use of the brush. A good rule of thumb is to get a new brush at the very least every year. One thing you can check is the ends of the bristles to see how worn they are. If you rub the hair brush on your arm if the bristles feel scratchy then this is a good indicator it is time for a change. Scratchy bristles mean they are pulling on your hair causing broken follicles, which result in split ends. This will give your hair the appearance of a frizzy out of control look no matter how often you brush your hair.