I-Tip Extensions: The Bead Method Explained I-tip extensions are one of the most underrated extension methods out there — no heat bonding, no adhesive, just a small metal bead clamped onto your natural hair. They're incredibly natural-feeling and a great option for the right candidate. Here's how they work. What Are I-Tip Extensions? I-tip extensions are individual hair strands with a small metal tip. Your stylist threads a small section of your natural hair through a micro b