The most natural looking hair extensions are tape-in, keratin fusion, and clip-in extensions. Tape-in extensions use a special adhesive to attach the extension strands directly to the existing hair strands. Keratin fusion extensions are fused with the existing hair strands using a hot glue gun. Clip-in extensions are the easiest to apply and provide the most natural looking results as they can be secured close to the root of the existing hair.
![seamless clip in human hair extensions](https://ladyidiy.com/wp-content/uploads/2023/02/ladyidiy-black-clip-in-human-hair-extensions-300x246.jpg)