Sew in hair extensions are a type of hair extensions which fit into your own hair and are held for a period of time by sewing it into your natural hair. This is a more permanent form of hair extension than tape in hair extensions which can easily be taken out. There is no damage to your own hair. It is easy to put in and easy to take out with good quality hair. It is very good for women who have little or no hair. It can last for up to six months if you take proper care of it. A sew in hair extension can be installed by yourself or locked into place by a hair dresser. Find out more about sew-in hair extensions, do a online search online.