Sew-Ins are a common method in adding extensions to your hair. Most Sew Ins last longer and are easier to maintain than other styles because of the person's own hair being braided down and sewed with hair thread that is washable. The desired style can be washed, colored, cut, etc. Sew Ins can be a full weave or partial. Most Sew Ins last 3 months or longer. It is best for the client to maintain the Sew In with regular visits to receive washing, conditiong, and re-tightening of the style.