How do strand-by-strand extensions differ from sewn-in extensions or glued-in tracks?
Sewn-in (weaving) or glued-in tracks of hair can also give a beautiful result of long, full hair, but because the tracks (usually about 3-4 tracks) run horizontally across the back of the head, the ridges caused by the presence of tracks are difficult to camouflage. Strand-by-strand extensions are many pieces of hair integrated throughout the entire head of hair, so there are no visible track lines, and can be styled up or down easily. Also, many people with track-type extensions complain of being in pain at the site of attachment (i.e. where the track is sewn to a tiny French braid along the scalp) because the weight of the track pulled on it.
