Loose hair is fed through a machine and sewn together, creating a track. Machine-tied wefts are usually thicker and a little bulkier than hand-tied wefts, but are sturdier and can handle many different types of installation methods. They are packaged as one long weft and designed to be cut with minimal shedding into the desired lengths needed for the install.
Hair is individually hand-tied onto a hand-sewn weft by an experienced technician. This attention to detail ensures that hair is more strongly secured and does not shed, making the hair extensions last longer. They are also thinner, flatter, and more flexible than machine-tied wefts, allowing the hair extensions to lay closer to the scalp and provide a more natural look and feel. In addition, it is recommended that hand-tied wefts are not cut to any desired length like machine-tied wefts. Doing so will cause the weft to unravel and hair to shed. Hand-tied wefts are typically already packaged into smaller widths to remedy this drawback, and be installed accordingly.