YoungSee Virgin Ktip Hair Extensions, also called keratin tip extensions, are crafted from high-quality Italian keratin for seamless, long-lasting semi-permanent wear. Heating the keratin tips lets them blend seamlessly with natural hair, and they support cold fusion installation, combining the benefits of Flat Tip extensions, allowing for cold fusion installation. This makes them an upgraded version of U Tip Hair Extensions. Whether for thinning areas on the crown or along the hairline, they offer a secure and discreet connection, creating a naturally blended style. Product Details TYPE: Pre-Bonded Hair Extensions (100% Virgin Human Hair) COLOR: Photographed from the actual product, but the color may vary slightly due to lighting, angle, and monitor settings. WEIGHT: 25g/pack, 100-150g for a full head LENGTH: 16"-24" SETTING: Can be washed, dyed, cut, styled and curled TEXTURE: Natural straight, with a natural wave when wet or left to air dry or diffused. INSTALLATION: Hot Fusion LIFESPAN: 6-12 months How many packs do I need? Minimum 4-6 packs Medium Hair 7-9 packs Thick Hair 10-12 packs