Great Lengths hair Extensions are done strand by strand.  The hair comes from India and is 100% human, high quality hair. The hair is attached with a keratia polymer adhesive.  The length of time they last varries from person to person depending on the thickness of their natural hair and their maintenance regiem, but on the average they last about three months.  The cost of the service may vary.  A thicking procedure can start at about $700.00, and a procedure to make the hair longer and thicker can start at $1,000.00.  Great Lengths are moveable and versitile, allowing for a variety of style options, is the strand by strand technique.  For most clients desiring longer hair, but do not want to commit to the expense of Great Lenghts, other options are available as well.