Hot Fusion: Keratin Glue (Sticks with Gun)
Keratin glue is the adhesive that is used to attach hair extensions to natural hair. Keratin glue most commonly comes in a small tube or pre-applied to the top of the hair extension.
It is also available in a solid stick form, much like a glue stick for a hot glue gun.
The stick form of keratin glue is used to apply the glue tip to the hair extension prior to attaching it to the natural hair.