Tip Hair Extensions Are Installed Using A Cold Or Hot Fusion Process. The Extensions Are Installed by Using a Hook or Loop, Which Is Used to Pull the Client’s Hair through a Small Micro Ring. The Keratin Tip Is Then Inserted In The Micro Ring And Then Pressed With Cold Fusion Pliers Closed. For Hot Fusion The Keratin Tip Is Heated With A Heat Wand To Soften The Keratin And Rolled Around The Client's Hair To Fuse The Client's Hair And The Keratin Tip Hair Extension. The Hair Is Then Left To Cool And Set. Keratin Tip Hair Extensions Are Various Types, Such As I, U, V, Flat, And Nail Tip. The V, Flat, and Nail Tip Hair Extensions.