Seamless injection tape in hair is a type of tape in hair extension that features a unique seamless injection technology. This technology involves injecting the hair strands into a thin, flexible, and transparent polyurethane tape, which creates a seamless, natural-looking bond when applied to the hair.

The main difference between seamless injection tape in hair and virgin tape in hair is the manufacturing process. They are both virgin human hair, while injection tape in hair can create a more seamless and natural-looking bond when applied to the hair.

In general, you need 150G-200G for a full head. The seamless injection tape in hair is 10-12.5G/Pack, so you need 15-20 Packs for a full head.