We Have a wide variety of hair extension glues to choose from. You are able to purchase them as a glue stick, a jar of glue which is easy to use. You also have the option of selecting a human glue gun for hair extensions. The glue sticks measure four inches in length and are made out of Keratin. They also come in a variety of colors depending on your preference. The jar of glue is a liquid bond sealer that is applied using a tint applicator brush. This is an awesome way of keeping moisture and oil away for a longer bond. This type of adhesive will outlast the others by 5 times. The human hair glue gun offers an accurate fold down strand hold for optimum usage.