Grow Hair Quicker

Remember that many of the things we do to style the hair can result in damage, so be sure to protect the hair whenever you use heat styling methods like blow-drying, flat-ironing, or curling with a curling iron. You may also want to look into using a night cap or scarf for sleeping to prevent the hair from being roughed up by the pillow or bedding.
If you care for the hair properly, you can reasonably expect to gain about one-half inch of growth per month. If you then get the hair trimmed every 8-12 weeks to keep the growth even and split-ends removed, you can usually gain 2 to 2-1/2 inches every six months or so.
©Hairfinder.com
See also:
Split-Ender
Growing your hair out
What split ends look like
How can I accelerate my hair growth?