A sew-in weave is a type of hair extension that is typically done at beauty salons where either real or synthetic human hair is sewn onto small, tightly woven braids against the scalp. Many people believe that these extensions look more natural that most other types, such as wigs or clip-on hair. In most cases, a sew-in weave will last for at least three months before it must be taken out. This type of hair extension might be a good choice for a person who is frequently around other people, because weaves tend to stay in place better than wigs or clips. This decreases the chances of a person finding herself in an embarrassing situation in the event her false hair comes out