Hair extensions are a great way to add length and volume to your natural hair. They are typically made of either human hair or synthetic fibers, and come in a variety of colors and textures. They can be attached to your natural hair using a variety of methods, including bonding, sewing, and micro-links. The cost of hair extensions will vary depending on the quality of the hair and the type of attachment used. Generally, the cost ranges from a few hundred to a few thousand dollars.