Most Helpful Girl
It depends a great deal on your hair's porosity, density, and texture, and whether you have naturally straight, wavy, curly, or kinky hair. If your hair has any sort of wave or curl in it I highly suggest you check out the Naturally Curly website. It has really helped me take great care of my curly hair and figure out my hair properties.
Are you bleaching your hair a lighter color or dying it a darker color? Dying it a dark color is unlikely to damage it. Bleaching, however, can damage your hair. By styling your hair, do you mean using heat on it? Such as blow-drying, flat-ironing, or curling it? Using heat excessively can be extremely damaging if you don't know how to properly maintain the health of your hair. And if you have a perm, relaxer, or texturizer in your hair then that can stunt your hair growth and cause it to break. I had a texturizer for years, and while my hair stayed healthy, the growth was stunted. Then the huge mistake of putting a relaxer on my hair was made and my hair fell out! I had super scraggly, thin, shoulder length hair. Finally now that I am natural and do not use any harsh chemical treatments on my hair, my hair is back to being very thick and long. So if you treat your hair chemically you may want to consider not using those chemicals in your hair anymore.