Hair weaving, when human or synthetic hair is weaved or braided into existing natural hair. It is also known as Hair Integration. The hair extension is woven to cornrowed hair. Not maintaining hair extensions properly can cause breakage.

High quality extension hair, usually hair that has never been processed ("virgin hair"), includes all donated textures of American hair, European hair, Brazilian hair, Indonesian hair, and Indian hair. All high quality extension hair can be chemically altered to make certain that it is the texture one desires.

The benefits of hair weave or hair extensions are that one can wear any texture without worrying about her own hair whether it is chemically processed or unprocessed. Weaves and extensions allow thin hair to have volume, add length to hair, and add texture.