Question: how do sewn in extensions work?
Answer: Sew-In Hair Extensions/Weave Weave hair is applied by braiding the natural hair into cornrows first, then using a needle and thread to sew the weave into the braid or cornrow. ... Sew-ins also come in wig form, which is sewn into cornrows the same way, however, the hair comes in one piece as opposed to separate wefts.